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Time series statistical test
In statistics, a unit root test tests whether a time series variable is non-stationary and possesses a unit root. The null hypothesis is generally defined
Unit_root_test
Feature of some stochastic processes
In probability theory and statistics, a unit root is a property of certain stochastic processes (such as a random walk) that can create challenges for
Unit_root
Time series statistical test
In statistics, an augmented Dickey–Fuller test (ADF) tests the null hypothesis that a unit root is present in a time series sample. The alternative hypothesis
Augmented_Dickey–Fuller_test
Time series statistical test
In statistics and econometrics, the ADF-GLS test (or DF-GLS test) is a test for a unit root in an economic time series sample. It was developed by Elliott
ADF-GLS_test
Time series statistical test
In statistics, the Dickey–Fuller test tests the null hypothesis that a unit root is present in an autoregressive (AR) time series model. The alternative
Dickey–Fuller_test
Time series statistical test
trend-stationary) against the alternative of a unit root. Contrary to most unit root tests, the presence of a unit root is not the null hypothesis but the alternative
KPSS_test
Statistical test
Phillips–Perron test (named after Peter C. B. Phillips and Pierre Perron) is a unit root test. That is, it is used in time series analysis to test the null hypothesis
Phillips–Perron_test
Relationship between the rational roots of a polynomial and its extreme coefficients
In algebra, the rational root theorem (or rational root test, rational zero theorem, rational zero test or p/q theorem) states a constraint on rational
Rational_root_theorem
Time series statistical test
with the first non-rejection used as an estimator for r. Just like a unit root test, there can be a constant term, a trend term, both, or neither in the
Johansen_test
Summary statistic
− 1 ) . {\displaystyle X_{t}\sim I(d-1).\,} ARIMA ARMA Random walk Unit root test Hamilton, James D. (1994) Time Series Analysis. Princeton University
Order_of_integration
MGARCH Gretl package repository ARIMAProcess Mathematica documentation UnitRootTest Mathematica documentation ARProcess Mathematica documentation GARCHProcess
Comparison of statistical packages
Comparison_of_statistical_packages
shifts when the rate itself changes. The process with hysteresis is a unit root process, which in its simplest form can be characterized as U t = U t
Hysteresis_(economics)
Stochastic process in time series analysis
Y_{t}} . Trend estimation Decomposition of time series KPSS test "Differencing And Unit Root Tests" (PDF). pages.stern.nyu.edu. Archived (PDF) from the original
Trend-stationary_process
Statistical technique to aid interpretation of data
use in model estimation. One of the alternative approaches involves unit root tests and the cointegration technique in econometric studies. The estimated
Linear_trend_estimation
test Unimodal distribution – redirects to Unimodal function (has some stats context) Unimodality Unit (statistics) Unit of observation Unit root Unit
List_of_statistics_articles
Type of time series model
pre-test the individual time series used, to confirm that they are non-stationary in the first place. This can be done by standard unit root DF testing and
Error_correction_model
Statistical property of collections of time series data
Peter C. B. Phillips and Sam Ouliaris (1990) show that residual-based unit root tests applied to the estimated cointegrating residuals do not have the usual
Cointegration
Mexican statistician (born 1957)
the North Carolina State University. Her doctoral dissertation, A New Unit Root Test for Autoregressive Time Series, was jointly supervised by David Dickey
Graciela_González_Farías
British economist
econometrics include asymmetric autoregressive distributed lag model, unit root tests in ESTAR framework, and the long-run structural VAR modelling approach
Yongcheol_Shin
Matrix programming language
VARMAX, VARMA, ARIMAX, ARIMA, and ECM models subject to general constraints on the parameters. Panel data estimation. Cointegration and unit root tests.
GAUSS_(software)
American engineering, procurement and construction company
KBR, Inc. (formerly Kellogg Brown & Root) is a U.S. based company operating in fields of science, technology and engineering. KBR works in various markets
KBR,_Inc.
defensive counteractions". Enders, Walter, and Clive Granger.(1988) "Unit-root tests and asymmetric adjustment with an example using the term structure
Walter_Enders
Unique positive real number which when multiplied by itself gives 2
The square root of 2 (approximately 1.4142) is the positive real number that, when multiplied by itself or squared, equals the number 2. It may be written
Square_root_of_2
German economist, professor and author (born 1962)
doi:10.1086/648305. S2CID 7585799. ———; Lütkepohl, Helmut (2004). "On Unit Root Tests in the Presence of Transitional Growth". Economics Letters. 84 (3):
Bernd_Lucke
Statistical package
opened by gretl. EViews helps researchers detect unit roots in their data series. Multiple unit root tests are available in the research software, including
EViews
German econometrician
2005). Lanne, Markku; ———; Saikkonen, Pentti (2002). "Comparison of Unit Root Tests for Time Series with Level Shifts". Journal of Time Series Analysis
Helmut_Lütkepohl
Nationality and autonomous community of Spain
Maria Pilar (2020). "A Double Life Cycle in Tourism Arrivals to Spain: Unit Root Tests with Gradual Change Analysis". Journal of Destination Marketing & Management
Catalonia
Arithmetic operation, inverse of nth power
number x of which the root is taken is the radicand. A root of degree 2 is called a square root and a root of degree 3, a cube root. Roots of higher degree
Nth_root
Canadian econometrician
econometrician at Boston University. Perron is known for the Phillips–Perron test of a unit root in time series regression, which was the result of his Ph.D. studies
Pierre_Perron
Statistical technique
into time series data, unit root tests (such as the Phillips–Perron test) will be biased towards non-rejection of the unit root null. Use of seasonally
Seasonal_adjustment
Study of convergence properties of statistical estimators
is H1: θ = θ0 + h/√n . This approach is especially popular for the unit root tests. There are models where the dimension of the parameter space Θn slowly
Asymptotic theory (statistics)
Asymptotic_theory_(statistics)
261–292. Chang, Y., & Park, J. Y. (2003). A sieve bootstrap for the test of a unit root. Journal of Time Series Analysis, 24(4), 379–400. https://economics
Yoosoon_Chang
Irrational algebraic number
unit circle to be 10 {\displaystyle {\sqrt {10}}} . Chinese mathematician Zhang Heng (78–139) approximated pi as 3.162 by taking the square root of
Square_root_of_10
British–Iranian economist
Mohammad Hashem Pesaran; L. Vanessa Smith; Takashi Yamagata (2008). Panel unit root tests in the presence of a multifactor error structure. CESifo. Retrieved
M._Hashem_Pesaran
Topics referred to by the same term
positive integer Unit imaginary number, square root of negative 1 ( − 1 ) {\displaystyle ({\sqrt {-1}})} Unit impulse, an impulse of height 1 Unit interval,
Unit
Test statistic
extensively in goodness of fit testing. It is also known as mean squared weighted deviation (MSWD) in isotopic dating and variance of unit weight in the context
Reduced_chi-squared_statistic
Derivative of a function with multiple variables
)}{h}}\end{aligned}}} where e i {\displaystyle \mathbf {e_{i}} } is the unit vector of i-th variable xi. In fact, the last equality shows that the partial
Partial_derivative
Australian and British economist (born 1948)
performance of lag selection and detraining methods for HEGY seasonal unit root tests (with Tomas del Barrio Castro and A.M. Robert Taylor), Econometric
Denise_R._Osborn
of the software testing process, it is most frequently performed at the unit level. It can test paths within a unit, paths between units during integration
Software_testing_tactics
Measure of variation in statistics
statistical population, data set or probability distribution is the square root of its variance (the variance being the average of the squared deviations
Standard_deviation
Stability criterion in control theory
In control theory and stability theory, root locus analysis is a graphical method for examining how the roots of a linear time-invariant (LTI) system change
Root_locus_analysis
composite deviation. Root angle in a bevel or hypoid gear, is the angle between an element of the root cone and its axis. The root circle coincides with
List_of_gear_nomenclature
On converting relations to functions of several real variables
the curve, one has y = f ( x ) {\displaystyle y=f(x)} . An example is the unit circle, whose points ( x , y ) {\displaystyle (x,y)} satisfy x 2 + y 2 −
Implicit_function_theorem
German econometrician (1940–2015)
1080/07350015.1995.10524577. Hassler, Uwe; ——— (1994). "On the Power of Unit Root Tests Against Fractional Alternatives". Economics Letters. 45 (1): 1–5. doi:10
Jürgen_Wolters
Plumbing company
Roto-Rooter Plumbing & Water Cleanup (formerly called Roto-Rooter Plumbing & Drain Service) is a plumbing company based in Cincinnati, Ohio. The company
Roto-Rooter
Reciprocating internal combustion engine
as well. The power unit issues during testing were so numerous that McLaren Honda found themselves changing complete power units endlessly, rather than
Honda V6 hybrid Formula One power unit
Honda_V6_hybrid_Formula_One_power_unit
Statistical test
multiplier test and the likelihood-ratio test, the Wald test is one of three classical approaches to hypothesis testing. An advantage of the Wald test over
Wald_test
Statistical test comparing two probability distributions
In statistics, the Kolmogorov–Smirnov test (also K–S test or KS test) is a nonparametric test of the equality of continuous (or discontinuous, see Section
Kolmogorov–Smirnov_test
Instantaneous rate of change of the function
change in a function per unit distance in that direction. In that convention the nonzero vector v is first normalized to the unit vector v ^ = v / ‖ v ‖
Directional_derivative
Finnish statistician
1986. Lanne, Markku; Lütkepohl, Helmut; ——— (2002). "Comparison of Unit Root Tests for Time Series with Level Shifts" (PDF). Journal of Time Series Analysis
Pentti_Saikkonen
American fast food chain
combos, draft root beer and root beer floats. A&W's origins date back to 1919 when Roy W. Allen set up a roadside drink stand offering root beer at a parade
A&W_Restaurants
Product of an integer with itself
a square each side of which has the same number of points as the square root of n; thus, square numbers are a type of figurate numbers (other examples
Square_number
Root-finding algorithm
Lehmer–Schur algorithm (named after Derrick Henry Lehmer and Issai Schur) is a root-finding algorithm for complex polynomials, extending the idea of enclosing
Lehmer–Schur_algorithm
Mathematical relation consisting of a multi-variable function equal to zero
variables (often a polynomial). For example, the implicit equation of the unit circle is x 2 + y 2 − 1 = 0. {\displaystyle x^{2}+y^{2}-1=0.} An implicit
Implicit_function
Divergent sum of positive unit fractions
the harmonic series is the infinite series formed by summing all positive unit fractions: ∑ n = 1 ∞ 1 n = 1 + 1 2 + 1 3 + 1 4 + 1 5 + ⋯ . {\displaystyle
Harmonic_series_(mathematics)
Portion of aircraft wing
for influencing a wing root airflow in an aircraft". 1997. Sobieczky, H (1998). "Configuration test cases for aircraft wing root design and optimization"
Wing_root
U.S. technology company
has a production unit in Vatva, Gujarat with installed capacity of 50,000 nozzle pumps per annum. In May 2019, Gilbarco Veeder-Root announced that after
Gilbarco_Veeder-Root
Clinical aid
pulpal testing is a clinical and diagnostic aid used in dentistry to help establish the health of the dental pulp within the pulp chamber and root canals
Dental_pulp_test
development, development testing might include static code analysis, data flow analysis, metrics analysis, peer code reviews, unit testing, code coverage analysis
Development_testing
Technique of integral evaluation
{\displaystyle \cos \theta >0.} We can choose a {\displaystyle a} to be the principal root of a 2 , {\displaystyle a^{2},} and impose the restriction − π / 2 < θ <
Trigonometric_substitution
Change of variable for integrals involving trigonometric functions
{\tfrac {x}{2}}} . This is the one-dimensional stereographic projection of the unit circle parametrized by angle measure onto the real line. The general transformation
Tangent half-angle substitution
Tangent_half-angle_substitution
Measure of distance between atoms of superimposed proteins
In bioinformatics, the root mean square deviation of atomic positions, or simply root mean square deviation (RMSD), is the measure of the average distance
Root mean square deviation of atomic positions
Root_mean_square_deviation_of_atomic_positions
Test for series convergence
_{n=0}^{\infty }a_{n}z^{n}} converges everywhere on the closed unit circle, except possibly at z = 1. Abel's test cannot be applied when z = 1, so convergence at that
Abel's_test
AI accelerator ASIC by Google
Tensor Processing Unit (TPU) is a neural processing unit (NPU) application-specific integrated circuit (ASIC) developed by Google for neural network machine
Tensor_Processing_Unit
Number divisible only by 1 and itself
the first to describe trial division for testing primality, again using divisors only up to the square root. In 1640 Pierre de Fermat stated (without
Prime_number
Statistical model validation technique
Cross-validation, sometimes called rotation estimation or out-of-sample testing, is any of various similar model validation techniques for assessing how
Cross-validation_(statistics)
Unit of measurement for amplitude levels in digital systems
0 dBFS represents the root mean square (RMS) level of a full-scale sinusoidal "P.382 (07/16): Technical requirements and test methods for multi-microphone
DBFS
Vibration that travels via pressure waves in matter
curves and on-line hearing test Audio for the 21st Century Archived 2009-01-23 at the Wayback Machine Conversion of sound units and levels Sound calculations
Sound
Device for detecting electricity
validate operation of the test light. When a known live circuit is not available, a separate proving unit that provides a known test voltage and sufficient
Test_light
Modular arithmetic concept
is a primitive root modulo n if every number a coprime to n is congruent to a power of g modulo n. In symbols, g is a primitive root modulo n if for
Primitive_root_modulo_n
First integrated test launch of SpaceX Starship
Starship flight test 1 was the maiden flight of the integrated SpaceX Starship launch vehicle. SpaceX performed the flight test on April 20, 2023. The
Starship_flight_test_1
function Noncototient Nontotient Euler's theorem Wilson's theorem Primitive root modulo n Multiplicative order Discrete logarithm Quadratic residue Euler's
List_of_number_theory_topics
Atomic bomb dropped on Hiroshima
Composite Group. Two more drop tests over the sea were made on 24 and 25 July, using the L-2 and L-5 units in order to test all components. Tibbets was the
Little_Boy
Software bug in which features stop working
statistical significance testing and change point detection are sometimes used to aid in this decision. Since debugging and localizing the root cause of a software
Software_regression
Method of testing for the convergence of an infinite series
mathematics, the limit comparison test (LCT) (in contrast with the related direct comparison test) is a method of testing for the convergence of an infinite
Limit_comparison_test
Form of causal modeling that fit networks of constructs to data
features for some common indices: the RMSEA (Root Mean Square Error of Approximation), SRMR (Standardized Root Mean Squared Residual), CFI (Confirmatory
Structural_equation_modeling
Method of determining the stability of a discrete-time linear system
a_{0},b_{0},c_{0}} ... that is negative, the polynomial has one root outside of the unit disc. This implies that the method can be stopped after the first
Jury_stability_criterion
English broadcaster and natural historian (born 1926)
him. Called Cascolus ravitis, the first word is a Latin translation of the root meaning of "Attenborough" and the second is based on a description of him
David_Attenborough
Integration over a non-flat region in 3D space
at r. The flux is defined as the quantity of fluid flowing through S per unit time. This illustration implies that if the vector field is tangent to S
Surface_integral
American multinational fast food corporation
retaining A&W Root Beer from a separate deal with Dr Pepper/Seven Up (now Keurig Dr Pepper).[citation needed] In 2002, Yum! began testing co-branding locations
Yum!_Brands
Measure of linear correlation
difference is that unlike covariance, this correlation coefficient does not have units, allowing comparison of the strength of the joint association between different
Pearson correlation coefficient
Pearson_correlation_coefficient
Season of television series
neighbors. 247 4 "Root Cause" Victor Macias Gavin Harris October 22, 2025 (2025-10-22) 1302 4.42 Officer Eva Imani and the Intelligence Unit investigates the
Chicago_P.D._season_13
Measure of the error of an estimator
square root of MSE yields the root-mean-square error or root-mean-square deviation (RMSE or RMSD), which has the same units as the quantity being estimated;
Mean_squared_error
President of the United States (2017–2021; since 2025)
13, 2023). "Trump compares political opponents to 'vermin' who he will 'root out', alarming historians". ABC News. Retrieved December 8, 2023. Ward, Myah
Donald_Trump
Teeth surgery
different surfaces of the teeth and periodontium. Do not touch the root surface. The root is covered with living periodontal ligament cells that are necessary
Dental_emergency
Software verification method
applied during unit testing, component testing, integration testing, system testing (automated/scripted or manual), or penetration testing. Runtime error
Runtime_error_detection
Graphical representation of the distribution of numerical data
combine the Greek root γραμμα (gramma; 'figure' or 'drawing') with the root ἱστορία (historia; 'inquiry or 'history'). Alternatively the root ἱστίον (histion)
Histogram
Medical condition
sensory deficits in the distribution of a nerve root. In the case of cervical radiculopathy [fr], Spurling's test may elicit or reproduce symptoms radiating
Radiculopathy
Genocide of European Jews by Nazi Germany
primarily for waging wars of aggression, which the prosecution argued was the root of Nazi criminality; nevertheless, the systematic murder of Jews came to
The_Holocaust
Statistical measure of how far values spread from their average
from the mean of a random variable. The standard deviation is the square root of the variance. Technically, it is the second central moment of a distribution
Variance
N-th root of the product of n numbers
their sum). The geometric mean of n {\displaystyle n} numbers is the nth root of their product, i.e., for a collection of numbers a1, a2, ..., an, the
Geometric_mean
United States anti-ballistic missile system
Verification Test CMCM: Critical Measurements and Countermeasures CTV: Control Test Vehicle FTG: Flight Test Ground-Based Interceptor FTX: Flight Test Other
Ground-Based Midcourse Defense
Ground-Based_Midcourse_Defense
Motor vehicle
III in 1959 after 15,151 units (hardtop and convertible) had been built. The Series III was introduced in September 1959. Rootes made subtle changes to
Sunbeam_Rapier
flux and the data are plotted on-screen during the test. These fluxes are most often measured in the unit 10−12 moles • cm−2 • s−1, or sometimes as small
Non-invasive micro-test technology
Non-invasive_micro-test_technology
because they are zero divisors modulo n. A primitive root modulo n, is a generator of the group of units of the ring of integers modulo n. There exist primitive
Root_of_unity_modulo_n
Web browser developed by Google
Chrome is internally tested with unit testing, automated testing of scripted user actions, fuzz testing, as well as WebKit's layout tests (99% of which Chrome
Google_Chrome
Chemical analysis of a hair sample
ISSN 2090-5939. S2CID 150379671. Cooper, Gail Audrey Ann (2011). "Hair testing is taking root". Annals of Clinical Biochemistry: International Journal of Laboratory
Hair_analysis
United States Army combat formation
division test, the maneuvers concentrated on the divisional cavalry regiments around which all other units were to be organized. Following the test, a board
1st Cavalry Division (United States)
1st_Cavalry_Division_(United_States)
American actress (born 1949)
Lynched Bodies— and the Internet is Fighting Over Whether to Believe Her". The Root. Retrieved January 28, 2026. JoVonn, Jeroslyn (January 26, 2024). "Pam Grier
Pam_Grier
American entrepreneur and venture capitalist (born 1967)
June 2025. "Crescendo Equity Partners Overview: Portfolio, Team and News". RootData. "LinkedIn profile - Crescendo Equity Partners - Venture Capital and
Peter_Thiel
UNIT ROOT-TEST
UNIT ROOT-TEST
Surname or Lastname
English
English : patronymic from Root 1.
Boy/Male
Hindu
Knower of virtues, Talented, Excellent, Virtuous
Surname or Lastname
Dutch (also de Roos) and Swiss German
Dutch (also de Roos) and Swiss German : habitational name for someone living at a house distinguished by the sign of a rose.Dutch (also de Roos) : metonymic occupational name for someone who grew roses, from roos ‘rose’.Dutch : from the female personal name Rosa (Latin rosa ‘rose’).Dutch : nickname from roos ‘erysipelas’, an infection which causes reddening of the skin and scalp, applied presumably to someone with a ruddy complexion.Swiss German : from a personal name formed with hrÅd ‘renown’.Swedish and Danish (of German origin) : as 1.Swedish : variant of Ros.English and Scottish : variant of Ross 2.
Female
Hebrew
(×וּרִית) Hebrew name URIT means "fire, light."
Male
English
Variant spelling of English Unni, UNI means "afflicted, depressed."
Boy/Male
Muslim/Islamic
Unit of army
Boy/Male
Indian, Sanskrit
Beginning; Root
Boy/Male
Hindu
Joyful unending, Calmness
Boy/Male
Muslim
Unit of army
Boy/Male
Egyptian
Root.
Girl/Female
Hebrew
Graceful.
Boy/Male
Indian
Unit of army
Girl/Female
Hebrew
Light.
Boy/Male
Hindu, Indian, Indonesian, Kenyan
Root
Female
English
English name derived from the vocabulary word, UNITY means "oneness, unity."
Surname or Lastname
English
English : nickname from the bird (Old English hrÅc), most likely given to a person with very dark hair or a dark complexion or to someone with a raucous voice.English : some early examples, such as Robert of ye Rook (London 1318) and Henry del Rook (Staffordshire 1332), point clearly to a local name of some kind. The first of these could be from a house sign, the second may be a variant of Rock 1.German : from a short form of a Germanic personal name formed with hrok, of uncertain origin; perhaps a cognate of 1 or from Middle High German rÅhen ‘to cry or yell (in battle)’ or Old High German ruoh ‘intent’.Perhaps an altered spelling of German Ruck.
Male
Chinese
a root.
Female
Welsh
Variant spelling of Welsh Enid, ENIT means "soul."
Surname or Lastname
English
English : metonymic occupational name for a maker or seller of boots, from Middle English, Old French bote (of unknown origin).Dutch and North German : metonymic occupational name for a boatman, from Dutch boot ‘boat’.
Surname or Lastname
English
English : nickname for a cheerful person, from Middle English rote ‘glad’ (Old English rÅt).English : metonymic occupational name for a player on the rote, an early medieval stringed instrument (Middle English, Old French rote, of uncertain origin but apparently ultimately akin to Welsh crwth).Dutch : topographic name for someone who lived by a retting place (Dutch root, a derivative of ro(o)ten ‘to ret’, akin to modern English rot), a place where flax is soaked in tubs of water until the stems rot to release the linen fibers.
UNIT ROOT-TEST
UNIT ROOT-TEST
Boy/Male
Tamil
Lord Shiva
Girl/Female
Tamil
Maanavika | மாநாவிகா
Young girl
Male
Japanese
(æ£å½¦) Japanese name MASAHIKO means "just prince."
Surname or Lastname
English
English : variant spelling of Horsman.
Boy/Male
Tamil
Selvanathn | ஸேலà¯à®µà®¾à®¨à®¾à®¤à¯à®¨
Boy/Male
Tamil
Brave Lord, The king of all warriors, King of all heroes
Girl/Female
Hindu, Indian, Kannada, Malayalam, Marathi, Sindhi, Tamil, Telugu, Thai
One with Beautiful Eyes
Boy/Male
Bengali, Gujarati, Hindu, Indian, Kannada, Malayalam, Marathi, Punjabi, Sanskrit, Sikh, Tamil, Telugu, Traditional
Bravery; The Sun of Valour; Lord Hanuman; Praiseworthy; Record; Strong Strong; One who Continue Progress
Girl/Female
Tamil
Fair, Beautiful, Gentle, Lotus
Boy/Male
Tamil
Dhaneswar | தநேஷà¯à®µà®°
God of money
UNIT ROOT-TEST
UNIT ROOT-TEST
UNIT ROOT-TEST
UNIT ROOT-TEST
UNIT ROOT-TEST
v. t.
United; joint; as, unite consent.
v. i.
To fix the root; to enter the earth, as roots; to take root and begin to grow.
v. t.
To tear up by the root; to eradicate; to extirpate; -- with up, out, or away.
v. t.
To turn up or to dig out with the snout; as, the swine roots the earth.
n.
An edible or esculent root, especially of such plants as produce a single root, as the beet, carrot, etc.; as, the root crop.
v. t.
To unite closely; to knit together.
n.
That which resembles a root in position or function, esp. as a source of nourishment or support; that from which anything proceeds as if by growth or development; as, the root of a tooth, a nail, a cancer, and the like.
a.
Feeding on roots; root-eating.
v. t.
To unite closely; to connect; to engage; as, hearts knit together in love.
a.
Of or pertaining to a unit or units; relating to unity; as, the unitary method in arithmetic.
n.
Concord; harmony; conjunction; agreement; uniformity; as, a unity of proofs; unity of doctrine.
v. t.
To cover or dress with soot; to smut with, or as with, soot; as, to soot land.
v. i.
To search or root in the ground, as a swine.
n.
That factor of a quantity which when multiplied into itself will produce that quantity; thus, 3 is a root of 9, because 3 multiplied into itself produces 9; 3 is the cube root of 27.
a.
Full of roots; as, rooty ground.
n.
The underground portion of a plant, whether a true root or a tuber, a bulb or rootstock, as in the potato, the onion, or the sweet flag.
imp. & p. p.
of Knit
v. t.
To unite.
v. t.
To put together so as to make one; to join, as two or more constituents, to form a whole; to combine; to connect; to join; to cause to adhere; as, to unite bricks by mortar; to unite iron bars by welding; to unite two armies.