Rhyme Desk
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Definition of "Operation" :

noun: the activity of operating something (a machine or business etc.)

"Her smooth operation of the vehicle gave us a surprisingly comfortable ride."

noun: a planned activity involving many people performing various actions

"They organized a rescue operation."

noun: a process or series of acts especially of a practical or mechanical nature involved in a particular form of work

"The operations in building a house."

noun: a 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."

noun: (mathematics) calculation by mathematical methods

"They were learning the basic operations of arithmetic."

noun: activity by a military or naval force (as a maneuver or campaign)

"It was a joint operation of the navy and air force."

noun: a business especially one run on a large scale

"A large-scale farming operation."

noun: (psychology) the performance of some composite cognitive activity; an operation that affects mental contents

"The cognitive operation of remembering."

noun: (computer science) data processing in which the result is completely specified by a rule (especially the processing that results from a single instruction)

"It can perform millions of operations per second."

noun: process or manner of functioning or operating

"The power of its engine determines its operation."

noun: the state of being in effect or being operative

"That rule is no longer in operation."