Open English Wordnet
Nouns
(n)operation, military operationactivity by a military or naval force (as a maneuver or campaign)“it was a joint operation of the navy and air force”
(n)operation, surgery, surgical operation, surgical procedure, surgical processa medical procedure involving an incision with instruments; performed to repair damage or arrest disease in a living body“they will schedule the operation as soon as an operating room is available”, “he died while undergoing surgery”
(n)operation, functioning, performanceprocess or manner of functioning or operating“the power of its engine determines its operation”, “the plane's operation in high winds”, “they compared the cooking performance of each oven”, “the jet's performance conformed to high standards”
(n)process, cognitive process, mental process, operation, cognitive operation(psychology) the performance of some composite cognitive activity; an operation that affects mental contents“the process of thinking”, “the cognitive operation of remembering”
(n)mathematical process, mathematical operation, operation(mathematics) calculation by mathematical methods“the problems at the end of the chapter demonstrated the mathematical processes involved in the derivation”, “they were learning the basic operations of arithmetic”
