/ Dictionary / Index N Neocene: Meaning and Definition of Find definitions for: Ne•o•cene Pronunciation: (nē'u-sēn"), [key] — adj., n. Geol. Neogene. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. neo-Catholic neo-Christianity 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