/ Dictionary / Index G Groton: Meaning and Definition of Find definitions for: Grot•on Pronunciation: (grot'n), [key] a city in SE Connecticut. 10,086. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Grotius grotto 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