/ Dictionary / Index A annexation: Meaning and Definition of Find definitions for: an•nex•a•tion Pronunciation: (an"ik-sā'shun, -ek-), [key] — n. the act or an instance of annexing, esp. new territory. the fact of being annexed. something annexed. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: annexation (Thesaurus) annex annexationism Related Content Daily Word Quiz: penchant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language