OPERATION

The state of being in effect or being operative

Example: "That rule is no longer in operation"

• action  8
• activeness  15
• activity  16

• commission  16
• running  8
• idle  5

A business especially one run on a large scale

Example: "A large-scale farming operation"

A planned activity involving many people performing various actions

Example: "They organized a rescue operation"

• activity  16

• rescue operation
• sting  6
• sting operation
• undercover operation

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

Example: "It can perform millions of operations per second"

• data processing

• access  10
• memory access
• asynchronous operation
• auxiliary operation
• • off-line operation
  • binary arithmetic operation
  • binary operation
  • boolean operation
  • computer operation
  • machine operation
  • concurrent operation
  • control function
  • control operation
  • dyadic operation
  • fixed-cycle operation
  • logic operation
  • logical operation
  • monadic operation
  • unary operation
  • multiplex operation
  • parallel operation
  • simultaneous operation
  • printing operation
  • lookup  12
  • search  11
  • consecutive operation
  • sequential operation
  • serial operation
  • sort  4
  • sorting  8
  • synchronous operation
  • threshold operation
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Activity by a military or naval force (as a maneuver or campaign)

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

• military operation

• activity  16

• combined operation
• maneuver  13
• manoeuvre  14
• simulated military operation
• • campaign  15
  • military campaign
  • naval campaign
  • military mission
  • mission  9
  • reenforcement
  • reinforcement  20
  • support  11
  • attack  12
  • onrush  9
  • onset  5
  • onslaught  13
  • offence  15
  • offense  13
  • offensive  18
  • peacekeeping  23
  • peacekeeping mission
  • peacekeeping operation
  • amphibious operation
  • information gathering
  • psychological operation
  • psyop  12
  • covert operation
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A medical procedure involving an incision with instruments; performed to repair damage or arrest disease in a living body

Example: "They will schedule the operation as soon as an operating room is available"

• surgery  11
• surgical operation
• surgical procedure
• surgical process

• medical procedure

• catheterisation  20
• catheterization  29
• ablation  10
• cutting out
• • excision  17
  • extirpation  20
  • amputation  14
  • angioplasty  17
  • arthroplasty  20
  • arthroscopy  21
  • brain surgery
  • castration  12
  • cauterisation  15
  • cauterization  24
  • cautery  12
  • chemosurgery  23
  • craniotomy  17
  • cryosurgery  20
  • curettage  12
  • curettement  15
  • debridement  17
  • decortication  18
  • d and c
  • dilatation and curettage
  • dilation and curettage
  • electrosurgery  20
  • enterostomy  16
  • enterotomy  15
  • enucleation  13
  • wrong-site surgery
  • evisceration  17
  • exenteration  19
  • eye operation
  • eye surgery
  • fenestration  15
  • gastrectomy  19
  • gastroenterostomy
  • gastrostomy  17
  • heart surgery
  • haemorrhoidectomy
  • hemorrhoidectomy
  • hysterotomy  22
  • implantation  16
  • intestinal bypass
  • jejunostomy  30
  • major surgery
  • microsurgery  20
  • minor surgery
  • myotomy
  • myringectomy
  • myringoplasty
  • myringotomy  22
  • neurosurgery  16
  • orchiopexy
  • osteotomy  14
  • ostomy  11
  • palatopharyngoplasty
  • ppp
  • uppp
  • uvulopalatopharyngoplasty
  • phlebectomy  25
  • photocoagulation
  • anaplasty  14
  • plastic surgery
  • reconstructive surgery
  • polypectomy
  • resection  11
  • rhinotomy
  • rhizotomy  26
  • sex-change operation
  • transsexual surgery
  • purse-string operation
  • shirodkar's operation
  • sterilisation  13
  • sterilization  22
  • strabotomy  17
  • taxis  12
  • tracheostomy  22
  • tracheotomy  21
  • organ transplant
  • transplant  12
  • transplantation  17
  • trephination  17
  • tympanoplasty
  • uranoplasty  16
  • vasovasostomy
  • vivisection  19
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A process or series of acts especially of a practical or mechanical nature involved in a particular form of work

Example: "The operations in building a house"

• procedure  14

Process or manner of functioning or operating

Example: "The power of its engine determines its operation"

• functioning  17
• performance  20

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

Example: "The process of thinking"

• cognitive operation
• cognitive process
• mental process
• process  11

• cognition  12
• knowledge  18
• noesis  6

• basic cognitive process
• higher cognitive process
• invalidation  16

(mathematics) calculation by mathematical methods

Example: "The problems at the end of the chapter demonstrated the mathematical processes involved in the derivation"

• mathematical operation
• mathematical process

• calculation  15
• computation  17
• computing  16

• permutation  15
• combination  17
• differentiation  22
• maximization  32
• • integration  12
  • exponentiation  23
  • involution  13
  • arithmetic operation
  • matrix operation
  • construction  16
  • relaxation  17
  • relaxation method
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The activity of operating something (a machine or business etc.)

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