/ Dictionary / Index O organic disease: Meaning and Definition of Find definitions for: organ'ic disease' Pronunciation: [key] — Pathol. Pathol. a disease in which there is a structural alteration (opposed to functional disease). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. organic chemistry organicism Related Content Daily Word Quiz: tactful Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language