Main Entry:

crys·tal·line

Pronunciation:

\ˈkris-tə-lən also -ˌlīn, -ˌlēn\

Function:

adjective

Etymology:

Middle English cristallin, from Anglo-French & Latin; Anglo-French, from Latin crystallinus, from Greek krystallinos, from krystallos

Date:

15th century

1: resembling crystal: as a: strikingly clear or sparkling <crystalline air> <a crystalline lake> b: clear-cut 2: made of crystal : composed of crystals3: constituting or relating to a crystal

— crys·tal·lin·i·ty \ˌkris-tə-ˈli-nə-tē\ noun