/ Dictionary / Index D decortication: Meaning and Definition of Find definitions for: de•cor•ti•ca•tion Pronunciation: (dē-kôr"ti-kā'shun), [key] — n. the act or process of decorticating. the removal of the cortex, the enveloping membrane, or a fibrinous covering from an organ or structure. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: decortication (Thesaurus) decorticate decorum Related Content Daily Word Quiz: diaphanous Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language