/ Dictionary / Index R Rodentia: Meaning and Definition of Find definitions for: Ro•den•tia Pronunciation: (rō-den'shu,-shē-u, -tē-u), [key] — n. the order comprising the rodents. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: rodentia (Thesaurus) rodent rodenticide Related Content Daily Word Quiz: clairvoyant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language