Synonym: cognitive operation, cognitive process, functioning, mathematical operation, mathematical process, mental process, military operation, performance, procedure, process, surgery, surgical operation, surgical procedure, surgical process. Similar words: AND operation, generation gap, consideration, operating, cooperative, migration, reparation, separation. Meaning: [‚ɑpə'reɪʃn /‚ɒp-] 
n. 1. a business especially one run on a large scale 2. a planned activity involving many people performing various actions 3. a process or series of acts especially of a practical or mechanical nature involved in a particular form of work 4. the state of being in effect or being operative 5. a medical procedure involving an incision with instruments; performed to repair damage or arrest disease in a living body 6. activity by a military or naval force (as a maneuver or campaign) 7. (computer science) data processing in which the result is completely specified by a rule (especially the processing that results from a single instruction) 8. process or manner of functioning or operating 9. (mathematics) calculation by mathematical methods 10. (psychology) the performance of some composite cognitive activity; an operation that affects mental contents 11. the activity of operating something (a machine or business etc.).
n. 1. a business especially one run on a large scale 2. a planned activity involving many people performing various actions 3. a process or series of acts especially of a practical or mechanical nature involved in a particular form of work 4. the state of being in effect or being operative 5. a medical procedure involving an incision with instruments; performed to repair damage or arrest disease in a living body 6. activity by a military or naval force (as a maneuver or campaign) 7. (computer science) data processing in which the result is completely specified by a rule (especially the processing that results from a single instruction) 8. process or manner of functioning or operating 9. (mathematics) calculation by mathematical methods 10. (psychology) the performance of some composite cognitive activity; an operation that affects mental contents 11. the activity of operating something (a machine or business etc.). 
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121. When they show an operation on TV, I have to turn away.
122. The operation was completed in ten minutes using only local anaesthetic.
123. A week in the country will set her up nicely after her operation.
124. Transportation costs would turn the operation into an uneconomical exercise.
125. She's recovering well from her operation, but she's still a little shaky on her feet.
126. Foreign aid workers have already begun winding down their operation.
127. During a three-hour operation six tumours were excised from the wall of the patient's stomach.
128. For three weeks a big operation went on to recover the wreckage from the sea bed.
129. The operation should enable Bobby to lead a normal life.
130. So far, only one person has survived an operation to implant an artificial heart.
131. A garden is, at best, a holding operation against nature.
132. The young surgeon contemplated the difficult operation of kidney transplant.
133. Their arrest was the culmination of an operation in which 120 other people were detained.
134. This gas will put you to sleep during the operation.
135. He was given a new heart in a five-hour operation.
136. NATO officials agreed to contribute troops and equipment to such an operation if the UN Security Council asked for it.
137. My father's only just had his operation and they won't let me see him yet.
138. Three months after the operation[sentencedict.com], the pain was still there.
139. Since recovering from her operation, she's had a new lease of life.
140. The inefficient operation cost the firm a lot of money.
141. She kept telling us about her operation, in the most graphic detail.
142. It was a risky operation, but might buy more time.
143. The operation has given me a new lease of life.
144. He had an operation to remove an obstruction in his throat.
145. From a medical point of view, there was no need for the operation.
146. She had to have the operation, or she would die.
147. She was released from prison in a cloak and dagger operation yesterday.
148. It was a certain Dr Davis who performed the operation.
149. We have to hope and pray the operation will go well.
150. I would imagine the operation will take about an hour.
More similar words: AND operation, generation gap, consideration, operating, cooperative, migration, reparation, separation, frustration, exploration, immigration, celebration, integration, corporation, demonstration, concentration, collaboration, administration, operate, operator, cooperate, cooperate with, ratio, nation, interaction, relation, formation, equation, national, education.