Etymology
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presidio (n.)

a seat of government, especially a place of military authority, hence, in U.S. Southwest, "a military post," 1808, American English, from Spanish presidio "fort, settlement," from Latin praesidium "defense, protection," from praesidere "to sit before, protect" (see preside). Related: Presidial; presidary.

updated on October 27, 2020

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