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Hard negative mining, also referred to as hard negative sampling, is a family of techniques in machine learning for selecting or constructing negative
Hard_negative_mining
Function for machine learning algorithms
choice is heuristic. It may appear puzzling that the mining process neglects "very hard" negatives (i.e., closer to the anchor than the positive). Experiments
Triplet_loss
Process of getting coal to the surface
response to negative land effects of coal mining and the abundance of abandoned mines in the US the federal government enacted the Surface Mining Control
Coal_mining
Extraction of valuable minerals or other geological materials from the Earth
refining, and transportation costs. Mining operations can have negative environmental impacts, both during mining and after the mine closes. Hence, most
Mining
Algorithms for matrix decomposition
Non-negative matrix factorization (NMF or NNMF), also non-negative matrix approximation is a group of algorithms in multivariate analysis and linear algebra
Non-negative matrix factorization
Non-negative_matrix_factorization
The effects of phosphate mining in Nauru have had significant negative impacts on the island's environment and economy. One of the most prominent effects
Effects_of_mining_in_Nauru
Racial slur against Black people
and animals. It also is or was a colloquial technical term in industry, mining, and seafaring. Nigger as "hidden defect" derives from "nigger in the woodpile"
Nigger
Valley, or Central Florida mining district, which produces from the Pliocene-age Bone Valley Formation. The Florida Hard Rock district mines phosphate
Phosphate mining in the United States
Phosphate_mining_in_the_United_States
Environmental problems from uncontrolled mining
Environmental impact of mining can occur at local, regional, and global scales through direct and indirect mining practices. Mining can cause erosion, sinkholes
Environmental impact of mining
Environmental_impact_of_mining
American underground space leasing corporation
(7.6 m) limestone pillars created by the room and pillar method of hard rock mining. The complex contains almost 10.5 miles (16.9 km) of illuminated, paved
SubTropolis
Mineral extraction from the ocean floor
U.S. territorial waters, citing the Deep Seabed Hard Minerals Resource Act of 1980. Deep sea mining is being considered in the exclusive economic zone
Deep_sea_mining
Table layout for visualizing performance; also called an error matrix
classification is negative and the predicted classification is negative (0,0). This is called a true negative result because the negative sample gets correctly
Confusion_matrix
the anthracite fields. Many railroads began as mining company shortline railroads. By 1840, annual hard coal output had passed the million-short ton mark
History of coal mining in the United States
History_of_coal_mining_in_the_United_States
Economic sector of Mongolia
are the Zaamar gold mine, the Boroo hard rock gold mine (discovered and extracted since 1979 by open cast mining), Gatsuurt Gold Mine, and tracer gold
Mining_in_Mongolia
Cave-in and miner rescue in Atacama Region, Chile
A mining accident began on 5 August 2010 with a cave-in at the San José copper–gold mine in the Atacama Desert, 45 kilometers (28 mi) north of the regional
2010_Copiapó_mining_accident
Textual emotion detection method
neutral with small deviations towards positive and negative affect, this strategy would make it harder to clearly distinguish between the two poles. A different
Sentiment_analysis
The history of coal mining goes back thousands of years, with early mines documented in ancient China, the Roman Empire and other early historical economies
History_of_coal_mining
Materials left over from the separation of valuable minerals from ore
can be done two ways: placer mining, which uses water and gravity to concentrate the valuable minerals, or hard rock mining, which pulverizes the rock containing
Tailings
Naturally occurring mineral aggregate
once mining ceases. Mining processes may create negative impacts on the environment both during the mining operations and for years after mining has ceased
Rock_(geology)
Mining area in Germany
Rhenish mining area, is a lignite mining area or district in the Cologne Bay, on the northwestern edge of the Rhenish Slate Mountains. The mining of lignite
Rheinisches_Braunkohlerevier
Type of industry
used in metal working and cement production, are hard to decarbonize. Industrial activities such as mining also results in pollution consisting of heavy
Heavy_industry
International corporation specialising in diamonds
specialises in the mining, trading and marketing of diamonds. The company is active in open-pit, underground, large-scale alluvial and coastal mining. It operates
De_Beers
United States federal law
years or older have the right under the 1872 mining law to locate a lode (hard rock) or placer (gravel) mining claim on federal lands open to mineral entry
General_Mining_Act_of_1872
Decentralized digital cryptocurrency
intensive process based on proof of work, called mining, which is performed by purpose-built computers. Mining consumes large quantities of electricity, with
Bitcoin
2023 film by Ben Wheatley
scientists who must outrun and outswim the megalodons when a malevolent mining operation threatens their mission and forces them into a high-stakes battle
Meg_2:_The_Trench
Chemical element with atomic number 74 (W)
is in tungsten carbide, a wear-resistant material used in metalworking, mining, and construction. About 50% of tungsten is used in tungsten carbide, with
Tungsten
Coal basins at Vosges and Jura
3952306°N 5.6232917°E / 47.3952306; 5.6232917 The Haute-Saône Keuperian coal mining basin constitutes the coal basins from the Vosges and Jura. From a geological
Haute-Saône Keuperian coal mining basin
Haute-Saône_Keuperian_coal_mining_basin
Indian coking coal mining company
Bharat Coking Coal Limited (BCCL) is an Indian coking coal mining company, headquartered in Dhanbad. It is a subsidiary of Coal India Limited, a public
Bharat_Coking_Coal
Reduction of housing prices with age
credit Investment rating for real estate Mortgage insurance Mortgage loan Negative equity Real estate derivative Real estate economics Real estate bubble
Filtering_(housing)
Chemical element with atomic number 27 (Co)
Today, cobalt is usually produced as a by-product of copper and nickel mining, but sometimes also from one of a number of metallic-lustered ores such
Cobalt
Australian real estate investment management firm
Resources Ora Banda Mining Orica Orora Perenti Perseus Mining PLS Predictive Discovery Ramelius Resources Regis Resources Resolute Mining Rio Tinto Sandfire
Charter_Hall
Informal fallacy
Quoting out of context (sometimes referred to as contextomy or quote mining) is an informal fallacy in which a passage is removed from its surrounding
Quoting_out_of_context
Chemical element with atomic number 78 (Pt)
1735, Antonio de Ulloa and Jorge Juan y Santacilia saw Native Americans mining platinum while the Spaniards were travelling through Colombia and Peru for
Platinum
Explanation of Nauru's triggering of the 2-year rule for deep-sea mining regulation
the Area would severely negatively impact the economies of several African states whose economies are highly dependent on mining. At the same time, developed
Deep-sea mining regulations in Nauru
Deep-sea_mining_regulations_in_Nauru
American photographer and environmentalist (1902–1984)
the tonal range of an image is the result of choices made in exposure, negative development, and printing. Adams was a life-long advocate for environmental
Ansel_Adams
Chemical element with atomic number 3 (Li)
nearby copper mining companies. In the United States, open-pit mining and mountaintop removal mining compete with brine extraction mining. Environmental
Lithium
Waste from coal mining
material left over from coal mining, usually as tailings piles or spoil tips. For every tonne of hard coal generated by mining, 400 kg (880 lb) of waste
Coal_refuse
also manufactured in Ontario. Hard-rock mining has taken place in the province for over 140 years (as of 2022). The mining industry in Ontario produces
Economy_of_Ontario
French coal mining basin
between 1 and 3 degrees. The deposit is highly faulted, which disrupts mining operations and causes significant water inflows into the mine. Coal outcrops
Vosges Keuperian coal mining basin
Vosges_Keuperian_coal_mining_basin
2026 non-fiction book by Nicolas Niarchos
a journalist for The New Yorker. In 2024, an investigation of his into mining in Indonesia was nominated for the Livingston Award. He is the son of Greek
The_Elements_of_Power
of Surface Mining Reclamation and Enforcement instructing mining companies on how to fix land that was negatively affected by strip-mining and mountaintop
Coal_mining_in_Kentucky
Branch of science about the natural world
climatology, glaciology, hydrology, meteorology and oceanography. Although mining and precious stones have been human interests throughout the history of
Natural_science
Pride in exaggerated masculinity
two different constructs within machismo, one positive and one negative. The negative construct of machismo is based on the traditional Western concept
Machismo
Any of the fifteen lanthanides plus scandium and yttrium
commonly uranium. The co-occurrence of rare earth elements with radioactive mining deposits has spurred some nations to have greater consciousness about pollution
Rare-earth_element
Fracture zone of the Pacific Ocean seabed
700 ft). The Clarion-Clipperton Zone is regularly considered for deep-sea mining due to the rich deposits of manganese, nickel, copper, and cobalt. Scientific
Clarion–Clipperton_zone
industry 29.1%, and agriculture 0.9%. In 2010 agriculture, forestry, and mining accounted for only 0.9% of Germany's gross domestic product (GDP) and employed
Economy_of_Germany
Machine capable of carrying out a complex series of actions automatically
change the process of mining. In 2015, these Caterpillar trucks were actively used in mining operations in Australia by the mining company Rio Tinto Coal
Robot
Form of carbon
Apart from Alrosa, other important diamond mining companies include BHP, which is the world's largest mining company; Rio Tinto, the owner of the Argyle
Diamond
Ore rich in iron or the element Fe
to make steel. In 2011 the Financial Times quoted Christopher LaFemina, mining analyst at Barclays Capital, saying that iron ore is "more integral to the
Iron_ore
industrial base, including electronics, armaments, and space programme. Mining industry in Ukraine [uk] Ukraine is one of the world's most important mineral
Economy_of_Ukraine
Chemical element with atomic number 28 (Ni)
is a silvery-white lustrous metal with a slight golden tinge. Nickel is a hard and ductile transition metal. Pure nickel is chemically reactive, but large
Nickel
Silicate mineral
"Topaz". Geoscience Australia. Retrieved 2024-03-20. "7 Negative Environmental Impacts Of The Gem Mining Industry". BIRON® Gems. 12 May 2023. Retrieved 2024-04-10
Topaz
Chemical element with atomic number 51 (Sb)
the type-sample was collected from the Sala Silver Mine in the Bergslagen mining district of Sala, Västmanland, Sweden. Coins of antimony were issued in
Antimony
conclusion from a negative premise (illicit negative) – a categorical syllogism has a positive conclusion, but at least one negative premise. Fallacy of
List_of_fallacies
American entrepreneur and venture capitalist (born 1967)
where his father worked as a chemical engineer. Klaus worked for various mining companies, which created an itinerant upbringing for Thiel and his younger
Peter_Thiel
Period of rapid progress in AI
Americans expressing concerns over a lack of control over AI and potential negative effect on human creativity. Nikolova & Angrisani (2025) found that people
AI_boom
Use of natural resources for economic growth
impacts the whole country as low wages for high-risk mining worsen poverty rates, exacerbating negative social impacts such as conflict, higher crime rates
Exploitation of natural resources
Exploitation_of_natural_resources
throughout their lives have to suffer all the negative impacts of opencast coal mining and whose fate the mining boundaries directly affect. He could also
Brown coal mining limits in North Bohemia
Brown_coal_mining_limits_in_North_Bohemia
Heartland Beef won Hudson's entrepreneur of the year award which has a negative effect on her mayoral rating and business even though she did not choose
List_of_Heartland_episodes
Free online crowdsourced encyclopedia
2008). "Proceeding of the 17th ACM conference on Information and knowledge mining – CIKM '08". CIKM '08: Proceedings of the seventeenth ACM conference on
Wikipedia
President of the United States from 2001 to 2009
(link) [scan ] Gellman, Barton; Poitras, Laura (June 6, 2013). "U.S. intelligence mining data from nine U.S. Internet companies in broad secret program". The Washington
George_W._Bush
2006 American political thriller film by Edward Zwick
assigned to a workforce overseen by Captain Poison, a ruthless warlord. While mining a river, Vandy discovers an enormous pink diamond. Captain Poison tries
Blood_Diamond
Observed inability to reproduce scientific studies
outcomes of a null hypothesis test: false negative, true negative, false positive, true positive. A false negative means that H 0 {\displaystyle H_{0}} is
Replication_crisis
2019 American science fiction drama
first job at Helios. Dev continues to plan the city of Meru, and after negative feedback from Alex, offers Alex a deal to improve the city with the ability
For_All_Mankind_(TV_series)
Country in South Asia
made early contributions to the study of the concept of zero as a number, negative numbers, arithmetic, and algebra. Trigonometry was further advanced in
India
"Mining". nationalatlas.ngii.go.kr (in Korean). Retrieved 7 May 2026. Kyung-min, No (23 December 2023). "[Weekender] From hearth to oven: Coal mining history
Economy_of_South_Korea
Chemical element with atomic number 82 (Pb)
and decreases in crime levels. Lead exposure is a global issue since lead mining and smelting, and battery manufacturing, disposal, and recycling, are common
Lead
don't let the sun set on your head in Cullman County.'" Bisbee, Arizona, a mining town that strictly enforced racial segregation, completely banned Chinese
List of sundown towns in the United States
List_of_sundown_towns_in_the_United_States
Subset of artificial intelligence
optimisation methods compose the foundations of machine learning. Data mining is a related field of study, focusing on exploratory data analysis (EDA)
Machine_learning
Harmful high-frequency radiation
population) Industrial radiography Medical radiology and nuclear medicine Uranium mining Nuclear power plant and nuclear fuel reprocessing plant workers Research
Ionizing_radiation
fires. After the July revolution in 2024, manufacturing sector witnessed negative impact by factory closures, weak private investment, and financial difficulties
Economy_of_Bangladesh
avoids adding Easter eggs to popular search pages and eggs that would negatively impact usability. As Google searches are case insensitive, search terms
List_of_Google_Easter_eggs
American rapper and singer-songwriter (1998–2018)
those celebrating his murder "self-righteous" and stating, "I have trouble mining any feelings of superiority or 'justice' from the killing of a 20-year-old
XXXTentacion
Extracting minerals from the seabed
Seabed mining, also known as seafloor mining is the recovery of minerals from the seabed by techniques of underwater mining. The concept includes mining at
Seabed_mining
Character in the Marvel Cinematic Universe
up an international treaty with Japan, India, and France to govern the mining and distribution of a rare metal inside the island known as Adamantium.
Thaddeus Ross (Marvel Cinematic Universe)
Thaddeus_Ross_(Marvel_Cinematic_Universe)
Type of rechargeable battery
electrolyte. Lithium and other minerals can have significant issues in mining, with lithium being water intensive in often arid regions and other minerals
Lithium-ion_battery
member of the Eurozone. The strongest sectors in the economy are energy, mining, metallurgy, machine building, agriculture and tourism. Primary industrial
Economy_of_Bulgaria
specifically in movies and fictional works, citing the overwhelmingly negative depiction. There is concern that such depictions could increase social
List_of_stock_characters
investment in infrastructure, and a challenge to the new mining law have contributed to the mining industry's overall decline.[citation needed] The industry
Economy_of_the_Philippines
Cultural area of England
prices fall considerably, putting inhabitants at risk of negative equity. The decline of coal mining and manufacturing in Northern England has led to comparisons
Northern_England
astronomy, writing, physics, medicine, agriculture, irrigation, geology, mining, metallurgy, art, sculpture, and goldsmithing. Application of the term "Indian"
Indigenous peoples of the Americas
Indigenous_peoples_of_the_Americas
Extracting features from raw data for machine learning
clustering under non-negativity constraints on the feature coefficients. These include Non-Negative Matrix Factorization (NMF), Non-Negative Matrix-Tri Factorization
Feature_engineering
Diplomatic crisis over US annexation threats
previously said the country would be open to strengthening its defence and mining ties with the United States and was ready to start a dialogue with the United
Greenland_crisis
Canadian businessman and author (born 1954)
invested in physical gold. However, he does not invest in stocks of gold-mining companies because he says cash flow is an important investment factor to
Kevin_O'Leary
1986 Japanese animated film by Hayao Miyazaki
to the ground. Pazu, an orphan working as a mechanic in a 19th-century mining town, catches her and takes her home to recover. The following morning,
Castle_in_the_Sky
credit Investment rating for real estate Mortgage insurance Mortgage loan Negative equity Real estate derivative Real estate economics Real estate bubble
Community_displacement
Human-caused changes to climate on Earth
from livestock, manure, rice cultivation, landfills, wastewater, and coal mining, as well as oil and gas extraction. Nitrous oxide emissions largely come
Climate_change
Airstrikes and capture of Nicolás Maduro
Venezuelan gold and allow deals with Minarven, Venezuela's state-owned gold mining company. According to the Constitution of Venezuela, in the event of the
2026 United States intervention in Venezuela
2026_United_States_intervention_in_Venezuela
System for dealing with email spam
of zeros is found. The idea "...to require a user to compute a moderately hard, but not intractable function..." was proposed by Cynthia Dwork and Moni
Hashcash
Comic books series by Frank Miller
negative space between panels, or are created by the outline of the panels themselves. This is especially evident in early "yarns," such as The Hard Goodbye
Sin_City
that he may really be innocent and that the simulation is affecting him negatively, enters the simulation to bring the prisoner out within a 17-second time
List of The Outer Limits (1995 TV series) episodes
List_of_The_Outer_Limits_(1995_TV_series)_episodes
Country in Southeastern Africa
attitudes, and religious practices negatively impacted women's rights and freedoms in the country. These negative views toward women as well as societal
Zimbabwe
Political party in the United States
proper role of government tended to be negative, and Jackson's political power was largely expressed in negative acts. He exercised the veto more than
Democratic Party (United States)
Democratic_Party_(United_States)
Currency moving with commodity prices
negative or positive effects, depending on whether the nation's currency was overvalued or undervalued. Deflation can either be positive or negative in
Commodity_currency
Type of associative learning process for behavioral modification
behaviors. Both kinds of stimuli can be further categorised into positive and negative stimuli, which respectively involve the addition or removal of environmental
Operant_conditioning
Broad-spectrum poisoning
hydroxycobalamin), might reduce the negative effects of chronic exposure; whereas, a deficiency might worsen negative health effects following exposure
Cyanide_poisoning
from Carbombya. Casey Kasem, who was Lebanese-American, objected to the negative portrayal of Arab people in The Transformers, resulting in his departure
List of The Transformers characters
List_of_The_Transformers_characters
minister. The new leader was able to negotiate concessions on a new mining tax with large mining companies but failed to reach agreement with East Timor on a
History_of_Australia
(Taran Killam) looks on with apprehension. The ad was both blasted for mining comedy out of ISIS' atrocious actions and applauded for daring to ridicule
List of Saturday Night Live commercial parodies
List_of_Saturday_Night_Live_commercial_parodies
Chemical element with atomic number 30 (Zn)
for zinc (meets specified minimum physical criteria related to current mining and production practices) was made in 2009 and was calculated to be roughly
Zinc
HARD NEGATIVE-MINING
HARD NEGATIVE-MINING
Male
Japanese
(1-晴, 2-春, 3-陽) Japanese unisex name HARU means 1) "clear up," 2) "spring," or 3) "sun, sunlight." Compare with another form of Haru.
Boy/Male
British, Danish, Dutch, English, Swedish
Hard Strength; Firm; Brave; Hardy; Strong
Male
German
Short form of German Harman, HARM means "bold/hardy man." In use by the Dutch.
Male
English
 English occupational surname transferred to forename use, derived from Old English weard, WARD means "guard, watchman."Â
Male
Native American
Native American Cree name MUSCOWEQUAN means "hard quill."
Male
English
Pet name for longer English names containing Hard- or Hart-, HARDY means "brave, hardy, strong."Â
Surname or Lastname
English (chiefly Midlands)
English (chiefly Midlands) : variant spelling of Heard.
Male
Hindi/Indian
(हरि) Hindi name HARI means "he who takes away." In Hindu mythology, this is a name borne by Vishnu.
Surname or Lastname
English
English : from the Old English personal name Heard or a Norman cognate Hard(on), also of Germanic origin. This was a byname meaning ‘hardy’, ‘brave’, ‘strong’, but it also seems to have been used as a short form of the various compound names containing this as a first element. Occasionally this may also be a variant of Hardy.English, German, Dutch, and Swedish (Hård) : nickname for a stern or severe man, from Middle English, Middle Low German hard, Middle Dutch hart, hert, Swedish hård ‘hard’, ‘inflexible’. The Swedish name was probably originally a soldier’s name.English : topographic name for someone who lived on a patch of particularly hard ground or one that was difficult to farm. Compare Hardacre.Dutch : occupational name from Middle Dutch harde, herde ‘herder’.
Surname or Lastname
English and North German
English and North German : from a personal name or nickname meaning ‘stag’, Middle English hert, Middle Low German hërte, harte.German : variant spelling of Hardt 1 and 2.Jewish (Ashkenazic) : ornamental name or a nickname from German and Yiddish hart ‘hard’.Irish : Anglicized form of Gaelic Ó hAirt ‘descendant of Art’, a byname meaning ‘bear’, ‘hero’. The English name became established in Ireland in the 17th century.French : from an Old French word meaning ‘rope’, hence possibly a metonymic occupational name for a rope maker or a hangman.Dutch : nickname from Middle Dutch hart, hert ‘hard’, ‘strong’, ‘ruthless’, ‘unruly’.This name was brought independently to New England by many bearers from the 17th century onward. Stephen Hart was one of the founders of Hartford, CT, (coming from Cambridge, MA, with Thomas Hooker) in 1635.
Boy/Male
American, Anglo, Arabic, Australian, British, Christian, English, German, Irish, Jamaican, Teutonic
Bard; Surname; Guardian; Watchman
Surname or Lastname
English
English : from the possessive case of the personal name Hard, denoting a son or servant of someone called Hard.
Surname or Lastname
English, Scottish, and French
English, Scottish, and French : nickname for a brave or
foolhardy man, from Old French, Middle English hardi ‘bold’,
‘courageous’ (of Germanic origin; compare Hard 1).Irish : in addition to being an importation of the English name,
this is also found as an Anglicized form (by partial translation) of
Gaelic Mac Giolla Deacair ‘son of the hard lad’.Scottish : variant spelling of Hardie 2.Bearers of the surname Hardy from Anjou and Normandy, France, are documented
in Quebec City in 1669. The secondary surnames Châtillon,
Boy/Male
Hindu
Hearts feeling, Main, Meaning
Surname or Lastname
English
English : variant of Herd.Respelling of Swedish HÃ¥rd (see Hard 2).
Surname or Lastname
English (chiefly Yorkshire and Northumbria), also Scottish
English (chiefly Yorkshire and Northumbria), also Scottish : variant spelling of Heard.
Boy/Male
Hindu, Indian
Hearts Feelings
Surname or Lastname
English
English : variant of Heard.
Surname or Lastname
English and German
English and German : nickname for someone with a deformed hand or who had lost one hand, from Middle English hand, Middle High German hant, found in such appellations as Liebhard mit der Hand (Augsburg 1383).Jewish (Ashkenazic) : nickname from German Hand ‘hand’ (see 1).Irish : Anglicized form of Gaelic Ó Flaithimh (see Guthrie), resulting from an erroneous association of the Gaelic name with the Gaelic word lámh ‘hand’. It is used as an English equivalent for several other names of Gaelic origin too, e.g. Claffey, Glavin, and McClave.Dutch : from a variant of hont ‘dog’, ‘hound’, either a derogatory nickname, or a habitational name for someone living at a house distinguished by the sign of a dog.
Surname or Lastname
English
English : habitational name from Chard or South Chard in Somerset, recorded in Domesday Book as Cerdren, possibly from Old English ceart ‘rough heathland’ + ærn ‘building’, ‘dwelling’. In some instances the surname may have arisen simply as a topographic name from ceart.French : from the personal name Chard, a short form of Richard;French : habitational name for someone from Chard in the department of Creuse.
HARD NEGATIVE-MINING
HARD NEGATIVE-MINING
Boy/Male
Australian, Hawaiian, Hebrew
Origin
Boy/Male
Tamil
Sight, Look, Guide, Vision, Brilliance
Surname or Lastname
English
English : variant spelling of Countess.
Girl/Female
Hindu, Indian
One who Loves the Life
Girl/Female
Indian, Sikh
Guru's Pride; Reflection of Guru
Boy/Male
Arabic, German, Muslim
The All-hearing; He who Hear Everything
Male
Irish
Irish form of Latin Columba, COLUM means "dove."
Boy/Male
Indian, Marathi, Sanskrit
Crown; Mother
Girl/Female
Hindu
Saintly
Boy/Male
Celebrity, Indian, Malayalam
Lord Ganesha
HARD NEGATIVE-MINING
HARD NEGATIVE-MINING
HARD NEGATIVE-MINING
HARD NEGATIVE-MINING
HARD NEGATIVE-MINING
superl.
Rough; acid; sour, as liquors; as, hard cider.
a.
Not positive; without affirmative statement or demonstration; indirect; consisting in the absence of something; privative; as, a negative argument; a negative morality; negative criticism.
a.
Hard-featured; ill-looking; as, Vulcan was hard-favored.
a.
Having hard or strong hands; as, a hard-fisted laborer.
superl.
Wanting softness or smoothness of utterance; harsh; as, a hard tone.
a.
Metalloidal; nonmetallic; -- contracted with positive or basic; as, the nitro group is negative.
imp. & p. p.
of Negative
superl.
Not easily penetrated, cut, or separated into parts; not yielding to pressure; firm; solid; compact; -- applied to material bodies, and opposed to soft; as, hard wood; hard flesh; a hard apple.
a.
Denying; renouncing; negative.
superl.
Difficult to bear or endure; not easy to put up with or consent to; hence, severe; rigorous; oppressive; distressing; unjust; grasping; as, a hard lot; hard times; hard fare; a hard winter; hard conditions or terms.
superl.
Difficult to please or influence; stern; unyielding; obdurate; unsympathetic; unfeeling; cruel; as, a hard master; a hard heart; hard words; a hard character.
superl.
Difficult to accomplish; full of obstacles; laborious; fatiguing; arduous; as, a hard task; a disease hard to cure.
v. t.
To harden; to make hard.
adv.
With difficulty; as, the vehicle moves hard.
a.
Asserting absence of connection between a subject and a predicate; as, a negative proposition.
adv.
With tension or strain of the powers; violently; with force; tempestuously; vehemently; vigorously; energetically; as, to press, to blow, to rain hard; hence, rapidly; as, to run hard.
v. t.
To reject by vote; to refuse to enact or sanction; as, the Senate negatived the bill.
superl.
Difficult, mentally or judicially; not easily apprehended, decided, or resolved; as a hard problem.
n.
The negative plate of a voltaic or electrolytic cell.
a.
Denying; implying, containing, or asserting denial, negation or refusal; returning the answer no to an inquiry or request; refusing assent; as, a negative answer; a negative opinion; -- opposed to affirmative.