/ Dictionary / Index N nonconcurrence: Meaning and Definition of Find definitions for: non•con•cur•rence Pronunciation: (non"kun-kûr'uns, -kur'-), [key] — n. refusal or failure to concur. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. non compos mentis* noncondensing engine Related Content Daily Word Quiz: philtrum Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language