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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61. The child's parents or guardians must give their consent before she has the operation.
62. I can use a word processor but I don't understand its operation.
63. Within an hour of the ship transmitting an SOS , six boats had arrived and started a rescue operation.
64. It will be a difficult operation, whichever method you choose.
65. The students watched as the surgeon performed the operation.
66. She's having an operation on her leg.
67. The operation revealed the extent of the cancer.
68. She came through the operation very well.
69. Thorn's electronics operation employs around 5,000 people.
70. Every time it does this operation,the computer aoses P.
71. The new rule comes into operation on February 1.
72. He was given a purgative before the operation.
73. Several grafts may be performed at one operation.
74. Better have the operation right now.
75. The patient kept bumbling on about his operation.
76. The operation unavoidably caused the patient much pain.
77. The UN rescue operation started shortly after dawn.
78. The operation is carried out under a general anaesthetic.
79. The operation proved a complete success.
80. The surgeon is performing an eye operation.
81. Your coming here has blown the whole operation.
82. They hedged in answering various questions about the operation.
83. Their plan had some difficulties in being in operation.
84. The operation carries an element of risk.
85. He is still recuperating from his operation.
86. He's mending nicely after his operation.
87. I felt dopey and drowsy after the operation.
88. The mummy successfully survived the operation.
89. She decided not to go through with the operation.
90. A full-scale security operation is now under way.
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.