/ ˌekspəˈdɪʃn; NAmE / noun
1.
an organized journey with a particular purpose, especially to find out about a place that is not well known :
to plan / lead / go on an expedition to the North Pole
2.
the people who go on an expedition :
Three members of the Everest expedition were killed.
3.
(sometimes humorous ) a short trip that you make when you want or need sth :
a shopping expedition
➡ note at trip
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WORD ORIGIN
late Middle English : via Old French from Latin expeditio(n-) , from expedire extricate, from ex- out + pes , ped- foot. 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 cent.