/ Dictionary / Index C crystallo-: Meaning and Definition of Find definitions for: crystallo- Pronunciation: [key] a combining form meaning “crystal,” used in the formation of compound words: crystallography. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. crystallize crystallographic Related Content Daily Word Quiz: acerbity Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language