expeditionary

adjective

ex·​pe·​di·​tion·​ary ˌek-spə-ˈdi-shə-ˌner-ē How to pronounce expeditionary (audio)
: of, relating to, or being an expedition
also : sent on military service abroad
an expeditionary force

Examples of expeditionary in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
For the first time, the US Air Force conducted the hot-pit refueling operation using an R-20 expeditionary refueling system. Prabhat Ranjan Mishra, Interesting Engineering, 5 Jan. 2026 The Marine Corps’ expeditionary field kitchen – a 20-foot container with an expandable structure and tents – feeds 750. Gidget Fuentes, USA Today, 5 Jan. 2026 Consider that ongoing civil suit against MassDOT as an expeditionary mission for the feds. Howie Carr, Boston Herald, 19 Oct. 2025 United States Marines and sailors with the Marine Rotational Force-Darwin board the expeditionary sea base ship USS Miguel Keith at an undisclosed location on August 27. Ryan Chan, MSNBC Newsweek, 10 Sep. 2025 See All Example Sentences for expeditionary

Word History

First Known Use

1817, in the meaning defined above

Time Traveler
The first known use of expeditionary was in 1817

Browse Nearby Words

Cite this Entry

“Expeditionary.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/expeditionary. Accessed 9 Jan. 2026.

Kids Definition

expeditionary

adjective
ex·​pe·​di·​tion·​ary ek-spə-ˈdish-ə-ˌner-ē How to pronounce expeditionary (audio)
: sent on military service abroad
an expeditionary force
Last Updated: - Updated example sentences
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