/ Dictionary / Index C chem-: Meaning and Definition of Find definitions for: chem- Pronunciation: [key] var. ofbefore a vowel: chemosmosis. chem. Pronunciation: [key] chemical. chemist. chemistry. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Chelyuskin Chem.E. Related Content Daily Word Quiz: fresco Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language