/ Dictionary / Index D dinosaurian: Meaning and Definition of Find definitions for: di•no•sau•ri•an Pronunciation: (dī"nu-sôr'ē-un), [key] — adj. pertaining to or of the nature of a dinosaur. —n. a dinosaur. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. dinosaur Dinosaur National Monument Related Content Daily Word Quiz: agitated Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language