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¹crystal

noun crys·tal \ˈkris-t^əl\

: a small piece of a substance that has many sides and is formed when the substance turns into a solid

: a clear hard mineral that is either colorless or very light in color and that is used in making jewelry

: a special type of glass that is very clear

Full Definition of CRYSTAL

: quartz that is transparent or nearly so and that is either colorless or only slightly tinged

: something resembling crystal in transparency and colorlessness

: a body that is formed by the solidification of a chemical element, a compound, or a mixture and has a regularly repeating internal arrangement of its atoms and often external plane faces

: a clear colorless glass of superior quality; also : objects or ware of such glass

: the glass or transparent plastic cover over a watch or clock dial

: a crystalline material used in electronics as a frequency-determining element or for rectification

: ice 7; broadly : methamphetamine in any form when used illicitly

See crystal defined for English-language learners

See crystal defined for kids

Origin of CRYSTAL

Middle English cristal, from Anglo-French, from Latin crystallum, from Greek krystallos — more at crust

First Known Use: 13th century

Other Chemical Engineering Terms

alkali, cation, decant, hygroscopic, isotope, oxidize, slurry, solute, viscous

Rhymes with CRYSTAL

Bristol, Crystal, distal, listel, pistil, pistol

²crystal

adjective

Definition of CRYSTAL

: consisting of or resembling crystal : clear, lucid

: relating to or using a crystal <a crystal radio receiver>

First Known Use of CRYSTAL

14th century

Related to CRYSTAL

Synonyms: clear, crystal clear, crystalline, limpid, liquid, lucent, pellucid, see-through, transparent

Antonyms: cloudy, opaque

Crystal

geographical name Crys·tal \ˈkris-t^əl\

Definition of CRYSTAL

city SE Minnesota N of Minneapolis pop 22,151

Rhymes with CRYSTAL

Bristol, crystal, distal, listel, pistil, pistol

CRYSTAL Defined for Kids

¹crystal

noun crys·tal \ˈkri-st^əl\

Definition of CRYSTAL for Kids

: quartz that is colorless and clear or nearly so

: a body formed by a substance hardening so that it has flat surfaces in an even arrangement <an ice crystal> <a salt crystal>

: a clear colorless glass of very good quality

: something clear like colorless quartz

: the clear cover over a clock or watch dial

²crystal

adjective

Definition of CRYSTAL for Kids

: made of or being like a clear colorless glass of very good quality <a crystal candy dish>

: ¹clear 4 <a crystal sky>

Medical Dictionary

crystal

noun crys·tal \ˈkris-t^əl\

Medical Definition of CRYSTAL

: a body that is formed by the solidification of a chemical element, a compound, or a mixture and has a regularly repeating internal arrangement of its atoms and often external plane faces

: ice 2; broadly : methamphetamine in any form when used illicitly

—crystal adjective