/ Dictionary / Index K kerogen: Meaning and Definition of Find definitions for: ker•o•gen Pronunciation: (ker'u-jun, -jen"), [key] — n. the bituminous matter in oil shale, from which shale oil is obtained by heating and distillation. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. kero kerosene Related Content Daily Word Quiz: stringent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language