crystalline
crys.tal.line \'kris-t*-l*n\ aj [ME cristallin, fr. MF & L; MF, fr. L crystallinus, fr. Gk kryst]allinos, fr. krystallos 1: made of crystal or composed of crystals 2: resembling crystal : as 2a: TRANSPARENT 2b: CLEAR-CUT 3: constituting or relating to a crystal