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Designing solid structures with tailored properties
Crystal engineering studies the design and synthesis of solid-state structures with desired properties through deliberate control of intermolecular interactions
Crystal_engineering
Ability of a solid material to exist in more than one form or crystal structure
phenomenon where a compound or element can crystallize into more than one crystal structure. The definition of polymorphism has evolved over the years and
Crystal_polymorphism
Material with a continuous, unbroken crystal lattice
materials science, a single crystal (or single-crystal solid or monocrystalline solid) is a material in which the crystal lattice of the entire sample
Single_crystal
Process by which a solid with a highly organized atomic or molecular structure forms
that leads to solids with a uniform pattern of atoms or molecules, i.e. a crystal. The uniform nature of a crystalline solid can be contrasted with amorphous
Crystallization
Net attractive interaction involving one of the halogen elements
supramolecular chemistry; drug design and biochemistry; crystal engineering and liquid crystals; and organic catalysis. Halogen bonds occur when a halogen
Halogen_bond
British and Australian chemist (born 1937)
metal-organic frameworks. He has been described as "a pioneer in crystal engineering involving transition metals". In 2025, he was awarded the Nobel Prize
Richard_Robson_(chemist)
Academic journal
Acta Crystallographica Section B: Structural Science, Crystal Engineering and Materials publishes scientific articles on structural science. According
Acta Crystallographica Section B
Acta_Crystallographica_Section_B
Glasshouse for the 1851 Great Exhibition in London
The Crystal Palace was a cast iron and plate glass structure, originally built in Hyde Park, London, to house the Great Exhibition of 1851. The exhibition
The_Crystal_Palace
Phenomenon in materials science
polymorph is a form of a crystal structure (a morph) that is suddenly unable to be produced, instead transforming into a different crystal structure with the
Disappearing_polymorph
Branch of chemistry
structures such as micelles, membranes, vesicles, liquid crystals, and is important to crystal engineering. Molecular recognition is the specific binding of
Supramolecular_chemistry
Indian structural chemist (born 1952)
professor at the Indian Institute of Science (IISc). His research is on crystal engineering and weak hydrogen bonds. In March 2026 he was awarded the 14th Ewald
Gautam_R._Desiraju
Solid material with highly ordered microscopic structure
A crystal or crystalline solid is a solid material whose constituents (such as atoms, molecules, or ions) are arranged in a highly ordered microscopic
Crystal
Italian chemist
supramolecular chemistry and functional materials. He also has an interest in crystal engineering, in particular by using the halogen bond. He is past-president of
Pierangelo_Metrangolo
Ordered arrangement of atoms, ions, or molecules in a crystalline material
In crystallography, crystal structure is a description of the ordered arrangement of atoms, ions, or molecules in a crystalline material. Ordered structures
Crystal_structure
Class of metal-organic frameworks
Lin, J.-B.; Chen, X.-M. (2012). "Metal Azolate Frameworks: From Crystal Engineering to Functional Materials". Chem. Rev. 112 (2): 1001–1033. doi:10.1021/cr200139g
Zeolitic imidazolate framework
Zeolitic_imidazolate_framework
American green chemist
"Noncovalent Derivatization: Green Chemistry Applications of Crystal Engineering". Crystal Growth & Design. 2 (4): 255–257. Bibcode:2002CrGrD...2..255C
John_Warner_(chemist)
CrystEngCommunity is a virtual web community for people working in the field of crystal engineering. The website is owned by the Royal Society of Chemistry (RSC). CrystEngCommunity
CrystEngCommunity
American technology company (1989–1997)
Crystal River Engineering Inc. was an American technology company best known for their pioneering work in HRTF based real-time binaural, or 3D sound processing
Crystal_River_Engineering
Solid consisting of discrete molecules
Applications. Boca Raton: CRC Press. Desiraju, G. R. (2013). "Crystal Engineering: From Molecular to Crystal". Journal of the American Chemical Society. 135 (27):
Molecular_solid
Overview of and topical guide to engineering
science Corrosion engineering Crystal engineering Electronic materials Forensic materials engineering Metal forming Metallurgical engineering Nanomaterials
Outline_of_engineering
area is motivated by crystal engineering and prediction (design), including metal-organic frameworks (MOFs) and zeolites. A crystal net is an infinite molecular
Periodic graph (crystallography)
Periodic_graph_(crystallography)
Research of materials
Rethwisch. Materials Science and Engineering – An Introduction (8th ed.) Gavezzotti, Angelo (1994-10-01). "Are Crystal Structures Predictable?". Accounts
Materials_science
Simple radio receiver circuit for AM reception
A crystal radio receiver, also called a crystal set, is a simple radio receiver, popular in the early days of radio. It uses only the power of the received
Crystal_radio
Chemical compound
micrometre-sized single crystal using a microfocused synchrotron X-ray beam". Acta Crystallographica Section B Structural Science, Crystal Engineering and Materials
Magnesium_stearate
Japanese chemist
[Supramolecular Metal Complexes: From Crystal Engineering to Frontier Orbital Engineering] (in Japanese). Kodansha. ISBN 978-4-06-153395-0
Susumu_Kitagawa
Chemical compound
diffraction". Acta Crystallographica Section B Structural Science, Crystal Engineering and Materials. 77 (4): 662–675. Bibcode:2021AcCrB..77..662G. doi:10
Phthalocyanine_Green_G
Portuguese chemical engineer (born 1949)
by various metal compounds (the Sen–Fujiwara–Pombeiro reaction). Crystal engineering of coordination compounds, self-assembly of polynuclear and supramolecular
Armando_J._L._Pombeiro
solubility, density, pH, and stability) of proteins. Crystal engineering Crystal growth Crystal optics Crystal system Crystallization processes Crystallographic
Protein_crystallization
science and engineering, particularly of three-dimensional crystal nets to crystal engineering, crystal prediction (design), and modeling crystal behavior
Periodic_graph_(geometry)
Indian chemistry professor (born 1968)
Kumar Biradha is a researcher in the field of crystal engineering. He was born on 15 June 1968 in Relangi, Andhra Pradesh. He is a professor at the Department
Kumar_Biradha
Scientific journal series on crystallography
and Advances Acta Crystallographica Section B: Structural Science, Crystal Engineering and Materials Acta Crystallographica Section C: Structural Chemistry
Acta_Crystallographica
Ordered array of colloidal particles
A colloidal crystal is an ordered array of colloidal particles and fine grained materials analogous to a standard crystal whose repeating subunits are
Colloidal_crystal
Chemical compound with formula MgSO4
occurrences". Acta Crystallographica Section B Structural Science, Crystal Engineering and Materials. 73 (1): 47–64. Bibcode:2017AcCrB..73...47F. doi:10
Magnesium_sulfate
Net attractive interaction involving one of the chalcogen elements
invoked in various non-covalent interactions, such as protein folding, crystal engineering, self-assembly, catalysis, transport, sensing, templation, and drug
Chalcogen_bond
Crystal structure prediction (CSP) is the calculation of the crystal structures of solids from first principles. Reliable methods of predicting the crystal
Crystal_structure_prediction
Former art school in London, England
Crystal Palace School of Art, Science, and Literature, also known as Crystal Palace Company's School of Art, was opened in 1854 by the Crystal Palace Company
Crystal_Palace_School
Academic journal
publishing original research and review articles on all aspects of crystal engineering including properties, polymorphism, target materials, and crystalline
CrystEngComm
Inorganic salt: MgCl2 and its hydrates
pressure". Acta Crystallographica Section B Structural Science, Crystal Engineering and Materials. 71 (Pt 1): 74–80. doi:10.1107/S205252061500027X. PMID 25643718
Magnesium_chloride
Academic journal
audience is scientists and engineers working in the fields of crystal growth, crystal engineering, and the industrial application of crystalline materials
Crystal_Growth_&_Design
Special crystals composed of multiple compounds
the intermolecular interactions and their effects on crystal packing allowed for the engineering of cocrystals with desired physical and chemical properties
Cocrystal
11-pointed star polygon
2001), "DNA enclosing forms from scaled growth forms of snow crystals", Crystal Engineering, 4 (2–3): 119–129, Bibcode:2001CrEng...4..119J, doi:10
Hendecagram
Light energy absorbance and re-emission
1038/nmat4259. PMID 25849370. Hamzehpoor, E.; Perepichka, D. F. (2020). "Crystal Engineering of Room Temperature Phosphorescence in Organic Solids". Angewandte
Phosphorescence
1998 studio album by Joe Satriani
Crystal Planet is the seventh studio album by the American guitarist Joe Satriani, released on March 3, 1998, by Epic Records. It was his first album
Crystal_Planet
Electronic oscillator circuit
A crystal oscillator is an electronic oscillator circuit that uses a piezoelectric crystal as a frequency-selective element. The oscillator frequency is
Crystal_oscillator
Chemical compound
PMID 30794373. S2CID 73505603. Biradha, K.; Sarkar, M.; Rajput, L. (2006). "Crystal engineering of coordination polymers using 4,4′-bipyridine as a bond between
4,4'-Bipyridine
Italian chemist
magnetic resonance imaging intermolecular forces and their use in crystal engineering, supramolecular chemistry, Borromean rings, and self-assembly processes
Giuseppe_Resnati
American manufacturing company
aviation products and components. Creaform manufactures metrology and 3D engineering devices for use in shop-floor environments It is based in Lévis, Quebec
Ametek
Mexican cave renowned for its giant crystals
Cave of the Crystals or Giant Crystal Cave (Spanish: Cueva de los cristales) is a cave connected to the Naica Mine at a depth of 300 metres (980 ft),
Cave_of_the_Crystals
German educator (1782–1852)
"Henriette Schrader-Breymann". Kahr, Bart (January 2004). "Crystal Engineering in Kindergarten". Crystal Growth & Design. 4 (1): 3–9. Bibcode:2004CrGrD...4.
Friedrich_Fröbel
Periodic optical nanostructure that affects the motion of photons
study of light (optics) and optical engineering. Indeed, the first research into what we now call photonic crystals may have been as early as 1887 when
Photonic_crystal
Chemical compound
the crystal structure determination of Pigment Orange 13, C32H24Cl2N8O2". Acta Crystallographica Section B Structural Science, Crystal Engineering and
Pigment_Orange_13
Chemical compound
Zaworotko MJ (April 26, 2021). "Polymorphic Crystal Forms and Cocrystals in Drug Delivery (Crystal Engineering), 3.2 Case Studies of Pharmaceutical Cocrystals"
Mandelic_acid
Electric charge generated in certain solids due to mechanical stress
piezoelectric crystals was developed by Bell Telephone Laboratories. Following World War I, Frederick R. Lack, working in radio telephony in the engineering department
Piezoelectricity
Chemical compound
"Commensurate and incommensurate hydrogen bonds. An exercise in crystal engineering." Journal of the American Chemical Society, 123(44), pp. 11057-64
Oxamide
achieved using colloidal crystal engineering with DNA. Lessons from atomic crystallization on macroscale structural features like crystal habit also translate
Spherical_nucleic_acid
Mineral made of silicon and oxygen
or to lack obvious crystal faces altogether and appear massive. Well-formed crystals typically form as a druse (a layer of crystals lining a void), of
Quartz
Phenomenon in crystallization
Crystal twinning occurs when two or more adjacent crystals of the same mineral are oriented so that they share some of the same crystal lattice points
Crystal_twinning
Branch of engineering
Electrical engineering is an engineering discipline concerned with the study, design, and application of equipment, devices, and systems that use electricity
Electrical_engineering
Intermolecular forces between oppositely-charged sites on molecules
in the field of crystal engineering to design molecular building blocks for self-assembly, to improve the properties of liquid crystals, and to design
Sigma_hole_interactions
State of matter with properties of both conventional liquids and crystals
Liquid crystal (LC) is a state of matter whose properties are between those of conventional liquids and those of solid crystals. There are many types of
Liquid_crystal
Telecommunications site in Bromley, England
The Crystal Palace transmitting station, officially known as Arqiva Crystal Palace, is a broadcasting and telecommunications site in the Crystal Palace
Crystal Palace transmitting station
Crystal_Palace_transmitting_station
Chemical compound and pharmaceutical drug
{μ-HN=C(O)Bu t } 2 ]". Acta Crystallographica Section B Structural Science, Crystal Engineering and Materials. 78 (6): 835–841. doi:10.1107/S2052520622009660. ISSN 2052-5206
Cisplatin
American chemist and University Administrator
of organic-inorganic hybrid nanomagnets and high-spin materials, crystal engineering and novel nanocrystalline semiconductor materials. In 1991, the McCullough
Richard_D._McCullough
Chemical compound
Oxidation State". Crystals. 7 (11): 329. doi:10.3390/cryst7110329. ISSN 2073-4352. "CHEMISTRY OF RARE GASES UNFOLDS". Chemical & Engineering News Archive.
Krypton_hexafluoride
Movement of molecules into a defined arrangement without outside influence
highly-crystalline architectures is considered today a form of 2D crystal engineering at the nanoscopic scale. Assembly theory Foldamer Ice-nine Macromolecular
Molecular_self-assembly
Gem variety of corundum
synthetically in laboratories for industrial or decorative purposes in large crystal boules. It occurs in association with ruby, zircon, biotite, muscovite
Sapphire
2016 studio album by Crystal Castles
is the fourth and final studio album by Canadian electronic music duo Crystal Castles, released on August 19, 2016, by Fiction Records and Casablanca
Amnesty_(I)
Israeli chemist and crystallographer
investigation of various molecular interactions using X-ray crystallography (crystal engineering). In collaboration with Danish scientists, he also used X-ray diffraction
Leslie_Leiserowitz
Phenomenon of deformation due to structural stress
In materials science and engineering, the yield point is the point on a stress–strain curve that indicates the limit of elastic behavior and the beginning
Yield_(engineering)
Rwandan holding company
Crystal Ventures Limited (CVL), commonly referred to as Crystal Ventures, is a private holding company owned by the Rwandan presidential party, Rwandese
Crystal_Ventures
Closed nuclear power plant in Florida
Crystal River Nuclear Plant, also called the Crystal River 3 Nuclear Power Plant, or simply CR-3, is a closed nuclear power plant located in Crystal River
Crystal_River_Nuclear_Plant
hydrogen bond as a design element in crystal engineering. Two- and three-dimensional building blocks of crystal architecture". Journal of Molecular Structure
Urea_adducts
Commuter rail station in Crystal City, Virginia
Crystal City station is a commuter rail station in the Crystal City section of Arlington County, Virginia, located near the George Washington Memorial
Crystal_City_station_(VRE)
Synthetic blue pigment from the group of phthalocyanine dyes
Mairi F.; Van Gelder, Richard (2004). "The innovative momentum of crystal engineering". CrystEngComm. 6 (78): 474. doi:10.1039/b409282a. Copper phthalocyanine
Copper_phthalocyanine
theorem". Acta Crystallographica Section B: Structural Science, Crystal Engineering and Materials. 73 (5): 874–878. doi:10.1107/S205252061700912X. ISSN 2052-5206
Bond_valence_method
Nicolas Steno asserted that, although the number and size of crystal faces may vary from one crystal to another, the angles between corresponding faces are
Timeline_of_crystallography
Crystallographic organisation based in Cambridge, England
to apply the data to applications in the life sciences, including crystal engineering and materials science. CCDC developed programs such as ConQuest and
Cambridge Crystallographic Data Centre
Cambridge_Crystallographic_Data_Centre
Lake in Iberia Parish, Louisiana, US
when the drilling assembly pierced an inactive third level of the Diamond Crystal Salt Company salt mine. The drill hole produced a vortex that drained the
Lake_Peigneur
Process in which disordered components form an organized structure or pattern
form one theory of pattern formation in nature. Assembly theory Crystal engineering Autopoiesis Langmuir–Blodgett film Nanotechnology Programmable matter
Self-assembly
Ion
Y.-B.; Lin, J.-B.; Chen, X.-M., "Metal Azolate Frameworks: From Crystal Engineering to Functional Materials", Chem. Rev. 2012, vol. 112, pp. 1001-1033
Imidazolate
Gorakavi - Chemical Engineer Kumar Biradha - researcher in the field of crystal engineering Aparajita Datta (born 1970), conservation scientist with the Nature
List of people from Andhra Pradesh
List_of_people_from_Andhra_Pradesh
Display that uses the light-modulating properties of liquid crystals
A liquid-crystal display (LCD) is a flat-panel display or other electronically modulated optical device that uses the light-modulating properties of liquid
Liquid-crystal_display
Chemical compound
1016/S0143-7208(02)00068-2. Martin U. Schmidt, Robert E. Dinnebier, Holger Kalkhof: Crystal Engineering on Industrial Diaryl Pigments Using Lattice Energy Minimizations
Pigment_Yellow_14
Study of chemical compounds containing fluorine-carbon bonds
JC, Dai C, et al. (2004). "Arene-perfluoroarene interactions in crystal engineering: structural preferences in polyfluorinated tolans". J. Mater. Chem
Organofluorine_chemistry
University in Krasnoyarsk, Siberia, Russia
"Univers", academic library, research department, research engineering center "Crystal", engineering center "Khimpribor" worked at the university. The university
Krasnoyarsk_State_University
in the crystal. During these studies, he revealed the occurrence of halogen-halogen interactions. Later, he coined the term “crystal engineering,” suggesting
Gerhard Schmidt (crystallographer)
Gerhard_Schmidt_(crystallographer)
Residential area in London, England
Hill. The buildings housed the Crystal Palace School of Art, Science, and Literature and Crystal Palace School of Engineering. It attracted visitors for over
Crystal_Palace,_London
Triarylmethane dye
Crystal violet or gentian violet, also known as methyl violet 10B or hexamethyl pararosaniline chloride, is a triarylmethane dye used as a histological
Crystal_violet
South African chemist
Luigi Nassimbeni. Her research focuses on supramolecular chemistry, crystal engineering, and metal–organic materials. After completing postdoctoral studies
Susan_Bourne
Chemical compound
Forms of Crisaborole: Crystal Engineering Identifies Polymorphism in Commercial Sources and Facilitates Cocrystal Formation". Crystal Growth & Design. 18
Crisaborole
1970 novel by Mary Stewart
The Crystal Cave is a 1970 fantasy novel by Mary Stewart. The first in a quintet of novels covering the Arthurian legend, it is followed by The Hollow
The_Crystal_Cave
Chemical compound
2020-03-30. Martin U. Schmidt, Robert E. Dinnebier, Holger Kalkhof: Crystal Engineering on Industrial Diaryl Pigments Using Lattice Energy Minimizations
Pigment_Yellow_83
Chemical compound
the crystal structures of the hydrates of sodium sulfate and selenate". Acta Crystallographica Section B: Structural Science, Crystal Engineering and
Sodium_selenate
Lithium compound
Shytle, R. Douglas (2013-12-02). "Improving lithium therapeutics by crystal engineering of novel ionic cocrystals". Molecular Pharmaceutics. 10 (12): 4728–4738
Lithium_salicylate
Polymer consisting of repeating units of a coordination complex
crystallization of a metal salt with a ligand. The mechanisms of crystal engineering and molecular self-assembly are relevant. The structure and dimensionality
Coordination_polymer
Scottish researcher
direction of David D. MacNicol in 1994 working on Supramolecular Crystal Engineering. (Thesis) In late 1994, he began postdoctoral working for Jeremy
Stuart_Rowan
Experimental psychiatric medication
Shytle, R. Douglas (2013-12-02). "Improving lithium therapeutics by crystal engineering of novel ionic cocrystals". Molecular Pharmaceutics. 10 (12): 4728–4738
Lithium_cocrystal
Chemical compound
1016/S0143-7208(02)00068-2. Martin U. Schmidt, Robert E. Dinnebier, Holger Kalkhof: Crystal Engineering on Industrial Diaryl Pigments Using Lattice Energy Minimizations
Pigment_Yellow_13
physical and chemical properties are related to crystal structure and microstructure. studying the engineering significance of these ideas and how they relate
Crystal_chemistry
Dam in California, US
Crystal Springs Dam is a concrete gravity dam constructed across the San Mateo Creek in San Mateo County, California, United States. It impounds water
Crystal_Springs_Dam
CRYSTAL ENGINEERING
CRYSTAL ENGINEERING
Girl/Female
Bengali, Indian
Crystal
Female
English
Variant spelling of English Crystal, CHRYSTAL means "crystal, ice."
Boy/Male
Scottish
Female
Welsh
Welsh form of French Christine, CRYSTIN means "believer" or "follower of Christ."
Girl/Female
American, Christian, Greek, Gujarati, Indian, Latin
Crystal; Ice; A Form of Crystal; Gem
Girl/Female
Muslim
Crystal
Girl/Female
Hindu, Indian, Kannada, Marathi, Telugu
Crystal
Girl/Female
American, Australian, Christian
Crystal; Anointed; Christian; Ice
Female
English
Variant spelling of English Crystal, CHRISTAL means "crystal, ice."
Girl/Female
Tamil
Sphatika | ஸà¯à®ªà®¼à®Ÿà®¿à®•ா
Crystal
Sphatika | ஸà¯à®ªà®¼à®Ÿà®¿à®•ா
Girl/Female
Greek American Latin English
From the Greek word meaning 'carrier of Christ', Famous bearer: St Christopher, patron Saint of...
Female
English
Variant spelling of English Crystal, KRYSTAL means "crystal, ice."
Girl/Female
American, Australian, Christian, Greek
Crystal; Ice
Girl/Female
American, Australian, British, Christian, Dutch, English, French, Greek, Hebrew, Latin
Clear; Unblemished; Brilliant Glass; Ice; Gem
Male
French
Variant spelling of French Tristan, probably TRYSTAN means "riot, tumult."
Boy/Male
Muslim
Crystal
Female
English
Variant spelling of English Crystal, CRISTAL means "crystal, ice."
Female
English
English name derived from the gem name, from Greek krystallos, CRYSTAL means "ice."
Female
English
Variant spelling of English Crystal, KRISTAL means "crystal, ice."Â
Boy/Male
Indian
Crystal
CRYSTAL ENGINEERING
CRYSTAL ENGINEERING
Boy/Male
Hindu, Indian, Marathi
Glorious; Delighting
Girl/Female
English
Abbreviation of Eleanor and Ellen.
Girl/Female
Hindu, Indian
Great Chief; Variant of Donald
Girl/Female
Hindu
Indrani (Wife of Lord Indra)
Girl/Female
American, Australian, British, Christian, Danish, Dutch, English, French, German, Greek, Jamaican, Latin, Swedish
Shining Light; Eleanor; Most Beautiful Woman; Derived from the Greek Helen; The Bright One; Horn Coloured; Yellow; Form of Cornelius; Horn; Sun Ray; Torch; Moon; Moon Elope; Diminutive of Eleanor; Diminutive of
Boy/Male
Tamil
Poornan | பூரà¯à®¨à®¾à®¨
Complete
Boy/Male
Arabic, Hindu, Indian, Marathi, Muslim, Oriya, Tamil, Telugu
Ray; Abundant; Copious
Surname or Lastname
English (mainly Yorkshire)
English (mainly Yorkshire) : nickname for a peasant who gave himself airs and graces, from Anglo-Norman French segneur ‘lord’ (Latin senior ‘elder’).English and Dutch : distinguishing nickname for the elder of two bearers of the same personal name (for example, a father and son or two brothers), from Latin senior ‘elder’.
Boy/Male
Australian, Finnish, German, Latin, Swedish
One who Rejoices; Great; Magnificent; Rejoice
Boy/Male
Indian, Marathi
Good Thinking Person
CRYSTAL ENGINEERING
CRYSTAL ENGINEERING
CRYSTAL ENGINEERING
CRYSTAL ENGINEERING
CRYSTAL ENGINEERING
n.
The glass over the dial of a watch case.
a.
Having highly colored under tail coverts; as, the crissal thrasher.
a.
Pertaining to the ribs or the sides of the body; as, costal nerves.
n.
Anything resembling crystal, as clear water, etc.
n.
The regular form which a substance tends to assume in solidifying, through the inherent power of cohesive attraction. It is bounded by plane surfaces, symmetrically arranged, and each species of crystal has fixed axial ratios. See Crystallization.
a.
Fig.: Resembling crystal; pure; transparent; pellucid.
a.
Pertaining to the production of crystals; crystal-producing; as, crystallogenic attraction.
a.
Consisting of, or like, crystal; clear; transparent; lucid; pellucid; crystalline.
a.
Crystal-like; transparent like crystal.
a.
Consisting, or made, of crystal.
a.
Relating to a crust.
a.
Wedge-shaped; as, a sphenoid crystal.
a.
Of or pertaining to crypts.
a.
Pertaining to the crissum; as, crissal feathers.
n.
A species of glass, more perfect in its composition and manufacture than common glass, and often cut into ornamental forms. See Flint glass.
n.
A compound crystal composed of two or more crystals, or parts of crystals, in reversed position with reference to each other.
n.
The basal plane of a crystal.
n.
The material of quartz, in crystallization transparent or nearly so, and either colorless or slightly tinged with gray, or the like; -- called also rock crystal. Ornamental vessels are made of it. Cf. Smoky quartz, Pebble; also Brazilian pebble, under Brazilian.
n.
A twin crystal.
n.
One of the microscopic particles resembling crystals, consisting of protein matter, which occur in certain plant cells; -- called also protein crystal.