/ Dictionary / Index U umbilication: Meaning and Definition of Find definitions for: um•bil•i•ca•tion Pronunciation: (um-bil"i-kā'shun), [key] — n. a central navellike depression. an umbilicate condition or formation. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. umbilicate umbilicus Related Content Daily Word Quiz: rustic Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language