/ Dictionary / Index G geol.: Meaning and Definition of Find definitions for: geol. Pronunciation: [key] geologic; geological. geologist. geology. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. geoisotherm geologic Related Content Daily Word Quiz: neologism Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language