/ Dictionary / Index D dianoia: Meaning and Definition of Find definitions for: di•a•noi•a Pronunciation: (dī"u-noi'u), [key] — n. Greek Philos. the mental faculty used in discursive reasoning. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. dianoetic dianthus Related Content Daily Word Quiz: spectral Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language