Being, relating to, or composed of crystal or crystals.(adjective)
Resembling crystal, as in transparency or distinctness of structure or outline.(adjective)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "crystalline" in a sentence
"In its citation, the Swedish academy said the duo achieved their result "at a time when many believed it was impossible for such thin crystalline materials to be stable.""
"Its floor is covered in crystalline, perfectly faceted blocks."
"Hang it out on the line in crystalline clean mountain air."