/ Dictionary / Index R retroserrulate: Meaning and Definition of Find definitions for: ret•ro•ser•ru•late Pronunciation: (re"trō-ser'yu-lit, -lāt", -ser'u-), [key] — adj. Bot., Zool. having tiny retrorse teeth or barbs. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. retroserrate retrospect Related Content Daily Word Quiz: placid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language