/ Dictionary / Index G gas chromatograph: Meaning and Definition of Find definitions for: gas' chromat'ograph Pronunciation: [key] — Chem. Chem. a chromatograph used for the separation of volatile substances. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. gas chamber gas coal Related Content Daily Word Quiz: arboreal Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language