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expedition Line breaks: ex¦ped|ition
Pronunciation: /ɛkspɪˈdɪʃ(ə)n/

Definition of expedition in English:


1A journey undertaken by a group of people with a particular purpose, especially that of exploration, research, or war: an expedition to the jungles of the Orinoco
More example sentences
  • It was no different from the several trekking expeditions I had undertaken in the hills.
  • The letter sent to the school by Scott detailed the expedition and what the explorer hoped to achieve on his voyage.
  • The expedition's purpose is to carry out an archaeological survey of the wreck and take video footage.
undertaking, enterprise, mission, project, quest, operation, commission, assignment, exploit;
exploration, safari, trek, hike, survey
archaic peregrination
informal junket, hop
1.1The people involved in an expedition: many of the expedition have passed rigorous courses
More example sentences
  • This expedition spent 13 months exploring the surrounding reefs of Low Isles.
  • This was a pity, not least because the main part of the expedition had already started exploring new caves in that area!
  • As I said, the group is a scouting expedition exploring what may be possible.
1.2 informal A short trip made for a particular purpose: a shopping expedition
2 [mass noun] formal Promptness or speed in doing something: the landlord shall remedy the defects with all possible expedition
More example sentences
  • Look out for satellites with all possible expedition.
  • You heard what I said in relation to the possible expedition of the hearing of the application for special leave.
  • I intend to conduct the inquiry with expedition and to report as soon as possible.


Late Middle English: via Old French from Latin expeditio(n-), from expedire 'extricate' (see expedite). Early senses included 'prompt supply of something' and 'setting out with aggressive intent'. The notions of 'speed' and 'purpose' are retained in current senses. sense 1 dates from the late 16th century.

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