1 a the action or process or method of working or operating. b the state of being active or functioning (not yet in operation). c the scope or range of effectiveness of a thing's activity.
2 an active process; a discharge of a function (the operation of breathing).
3 a piece of work, esp. one in a series (often in pl.: begin operations).
4 an act of surgery performed on a patient.
5 a a strategic movement of troops, ships, etc. for military action. b preceding a code-name (Operation Overlord).
6 a financial transaction.
7 Math. the subjection of a number or quantity or function to a process affecting its value or form, e.g. multiplication, differentiation.
Phrases and idioms:
operations research = operational research.
Etymology: ME f. OF f. L operatio -onis (as OPERATE)
Useful english dictionary. 2012.
Look at other dictionaries:
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 [ˌɒpəˈreɪʆn 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
Operation Ke — Part of the Pacific Theater of World War II … Wikipedia
Operation 40 — was a Central Intelligence Agency sponsored undercover operation in the early 1960s, which was active in the United States and the Caribbean (including Cuba), Central America, and Mexico. It was created by President Dwight D. Eisenhower in March… … Wikipedia
Operation MO — Teil von: Zweiter Weltkrieg, Pazifikkrieg … Deutsch Wikipedia
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Operation K — Part of the Pacific Theater of World War II Approximate route of Operation K … Wikipedia