/ Dictionary / Index D diagnosis: Meaning and Definition of Find definitions for: di•ag•no•sis Pronunciation: (dī"ug-nō'sis), [key] — pl. -ses the process of determining by examination the nature and circumstances of a diseased condition. the decision reached from such an examination. Abbr.: Dx scientific determination; a description that classifies a group or taxon precisely. a determining or analysis of the cause or nature of a problem or situation. an answer or solution to a problematic situation. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: diagnosis (Thesaurus) diagnose diagnostic 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