Definition
Military-speak for forces designed to be deployed abroad for operations, as opposed to troops who stay home defending the homeland. It's the difference between soldiers who pack their bags for foreign adventures and those who already know where the good coffee shop near base is.
Example Usage
The expeditionary force departed for the Middle East, equipped with enough gear to invade a small country or build a reasonably nice hotel.
Source: Military terminology via dictionary
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See “expeditionary” in Corporate Speak, Gen-Z Slang, Pirate Speak, and more.
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