/ Dictionary / Index I interglacial: Meaning and Definition of Find definitions for: in•ter•gla•cial Pronunciation: (in"tur-glā'shul), [key] — adj. Geol. occurring or formed between times of glacial action. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. intergeneric interglyph Related Content Daily Word Quiz: simian Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language