/ Dictionary / Index S secede: Meaning and Definition of Find definitions for: se•cede Pronunciation: (si-sēd'), [key] — -ced•ed, -ced•ing. to withdraw formally from an alliance, federation, or association, as from a political union, a religious organization, etc. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: secede (Thesaurus) secco secern 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