Cooperation
来自Big Physics
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late Middle English: from Latin cooperatio(n- ), from the verb cooperari (see cooperate); later reinforced by French coopération .
wiktionary
1620–30, from French cooperation, from Late Latin cooperātiō.
etymonline
cooperation (n.)
"the act of working together to one end," 1620s, from French coopération, or directly from Late Latin cooperationem (nominative cooperatio) "a working together," noun of action from past-participle stem of cooperari "to work together," from assimilated form of com "with, together" (see com-) + operari "to work," from PIE root *op- "to work, produce in abundance."
