operation

operation
operation (n.) late 14c., "action, performance, work," also "the performance of some science or art," from O.Fr. operacion, from L. operationem (nom. operatio) "a working, operation," from pp. stem of operari "to work, labor" (in L.L. "to have effect, be active, cause"), from opera "work, effort," related to opus (gen. operis) "a work" (see OPUS (Cf. opus)). The surgical sense is first attested 1590s. Military sense of "series of movements and acts" is from 1749.

Etymology dictionary. 2014.

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  • opération — [ ɔperasjɔ̃ ] n. f. • XIIIe « ouvrage, travail »; lat. operatio 1 ♦ Action d un pouvoir, d une fonction, d un organe qui produit un effet selon sa nature. Les opérations de la digestion. « La mémoire est nécessaire pour toutes les opérations de… …   Encyclopédie Universelle

  • operation — op‧e‧ra‧tion [ˌɒpəˈreɪʆn ǁ ˌɑː ] noun 1. [uncountable] the way the parts of a machine, system etc work together, or the process of making a machine, system etc work: • the design and operation of specialized equipment 2. in/​into operation… …   Financial and business terms

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