/ Dictionary / Index M marine geology: Meaning and Definition of Find definitions for: marine' geol'ogy Pronunciation: [key] the branch of geology dealing with the rocks, sediments, and processes of the floors and margins of the oceans. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. marine engineering marine glue Related Content Daily Word Quiz: perspicacious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language