/ Dictionary / Index E expedition: Meaning and Definition of Find definitions for: ex•pe•di•tion Pronunciation: (ek"spi-dish'un), [key] — n. an excursion, journey, or voyage made for some specific purpose, as of war or exploration. the group of persons, ships, etc., engaged in such an activity: a large expedition of scientists and military personnel. promptness or speed in accomplishing something: He worked with great expedition. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: expedition (Thesaurus) expediter expeditionary Related Content Daily Word Quiz: cetacean Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language