/ Dictionary / Index A abscission: Meaning and Definition of Find definitions for: ab•scis•sion Pronunciation: (ab-sizh'un, -sish'-), [key] — n. the act of cutting off; sudden termination. the normal separation of flowers, fruit, and leaves from plants. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: abscission (Thesaurus) abscissa abscission layer Related Content Daily Word Quiz: neologism Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language