/ Dictionary / Index R rhinoceros beetle: Meaning and Definition of Find definitions for: rhinoc'eros bee"tle Pronunciation: [key] any of several scarabaeid beetles, esp. of the genus Dynastes, which comprises the largest beetles, characterized by one or more horns on the head and prothorax. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. rhinoceros rhinology Related Content Daily Word Quiz: vertigo Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language