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operation

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operation/ˌɑːpəˈreɪʃən/noun
pluraloperations
operation
/ˌɑːpəˈreɪʃən/
noun
pluraloperations
Learner's definition of OPERATION  
[count] : a process in which a doctor cuts into someone's body in order to repair or remove a damaged or diseased part
[count] 
: a usually small business or organization
   b : an activity of a business or organization— usually plural
[noncount] : the state of functioning or being used— used with in or into
[noncount] : the way something functions or is used
[count] : a set of planned actions for a particular purpose
[count] : a single action performed by a computer
[noncount] : the act of using and controlling something
[count]mathematics : a mathematical process (such as addition or multiplication) that is used for getting one number or set of numbers from others according to a rule
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