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.

1400–50; late Middle English < Latin expedītiōn- (stem of expedītiō) a (military) traveling. See expedite, -ion

preexpedition, noun

1. See trip1. 3. quickness, dispatch, alacrity.
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
expedition (ˌɛkspɪˈdɪʃən)
1.  an organized journey or voyage for a specific purpose, esp for exploration or for a scientific or military purpose
2.  the people and equipment comprising an expedition
3.  a pleasure trip; excursion
4.  promptness in acting; dispatch
[C15: from Latin expedītiō, from expedīre to prepare, expedite]

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Word Origin & History

early 15c., "military campaign; the act of rapidly setting forth," from L. expeditionem, noun of action from expidere (see expedite). Meaning "journey for some purpose" is from 1590s. Sense by 1690s also included the body of persons on such a journey. Related: Expeditionary.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Idioms & Phrases


see fishing expedition.

The American Heritage® Dictionary of Idioms by Christine Ammer.
Copyright © 1997. Published by Houghton Mifflin.
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Example sentences
The object of the expedition was accomplished.
That expedition was intended to sample the ocean bed and search for new forms
  of life there.
Whether you're interested in a day trip or an extended camping expedition, the
  Shenandoah should be at the top of your list.
Four years later, a second Arctic expedition took place.
Idioms & Phrases
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