expeditionary

From expedition +‎ -ary.

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expeditionary (not comparable)

1. Of or pertaining to an expedition.
2. (military) Intended for military operations abroad.

   an expeditionary force

expeditionary (plural expeditionaries)

1. (chiefly in the plural) One who goes on expeditions, especially one who is a member of an expeditionary military force.
   • 1966, João Baptista Mascarenhas de Moraes, The Brazilian Expeditionary Force by Its Commander:

     [...] turned out in its best attire to receive the Brazilian expeditionaries and the group of soldiers representing the gallant U.S. 10th Mountain Division.

   • 2013, Matt J. Rossano, Mortal Rituals: What the Story of the Andes Survivors Tells Us About Human Evolution, Columbia University Press, →ISBN, page 81:

     He who had been left for dead, rose again in three days to become the leader of the expeditionaries and, in a very real way (albeit not exclusively), [...]. Antonio “ Tintin” Vizintin was brave and strong, qualities that made him a good expeditionary.