1. [ noun ] the state of being in effect or being operative

"that rule is no longer in operation"

Related terms: action commission running engage
2. [ noun ] (business) a business especially one run on a large scale

: "a large-scale farming operation" "a multinational operation" they paid taxes on every stage of the operation" "they had to consolidate their operations"

Related terms: business_activity operate
3. [ noun ] process or manner of functioning or operating
Synonyms: performance functioning

"the power of its engine determine 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"

Related terms: work process job go
4. [ noun ] a planned activity involving many people performing various actions

: "they organized a rescue operation" "the biggest police operation in French history" "running a restaurant is quite an operation" "consolidate the companies various operations"

Related terms: activity undercover_operation rescue_operation
5. [ 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"

Related terms: data_processing search asynchronous_operation auxiliary_operation access logic_operation concurrent_operation control_operation dyadic_operation fixed-cycle_operation multiplex_operation monadic_operation parallel_operation computer_operation printing_operation serial_operation boolean_operation sort synchronous_operation threshold_operation computer_science
6. [ noun ] (military) a military or naval action (as a maneuver or campaign)
Synonyms: military_operation

"it was a joint operation of the navy and air force"

Related terms: military_action attack mission maneuver campaign support offense psychological_operation amphibious_operation covert_operation information_gathering naval_campaign Meuse combined_operation Operation_Desert_Storm peacekeeping military
7. [ noun ] (work) a process or series of acts especially of a practical or mechanical nature involved in a particular form of work
Synonyms: procedure

: "the operations in building a house" "certain machine tool operations"

Related terms: work go
8. [ noun ] (medicine,surgery) a medical procedure involving an incision with instruments; performed to repair damage or arrest disease in a living body
Synonyms: surgical_procedure surgery surgical_process surgical_operation

"they will schedule the operation as soon as an operating room is available" "he died while undergoing surgery"

Related terms: therapy medical_procedure ablation palatopharyngoplasty vasovasostomy uranoplasty colostomy amputation implantation sex-change_operation arthroscopy sterilization face_lift hysterotomy plastic_surgery craniotomy cryosurgery curettage angioplasty debridement heart_surgery arthroplasty jejunostomy keratoplasty laparotomy autoplasty minor_surgery major_surgery neurosurgery myringectomy myringotomy sclerotomy Shirodkar's_operation strabotomy tracheostomy transplant trephination cautery dilation_and_curettage vivisection brain_surgery myringoplasty decortication electrosurgery enterostomy enucleation evisceration exenteration fenestration gastrectomy gastroenterostomy gastrostomy haemorrhoidectomy lobotomy nose_job iridectomy iridotomy intestinal_bypass microsurgery myotomy chemosurgery castration wrong-site_surgery orchiopexy osteotomy ostomy phalloplasty phlebectomy photocoagulation polypectomy resection rhinotomy rhizotomy taxis tympanoplasty suturing incision haemostasia hypophysectomize trepan decorticate suction freeze ablate surgery
9. [ noun ] the activity of operating something (a machine or business etc.)

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

Related terms: commercial_enterprise operate
10. [ noun ] (psychology) the performance of some composite cognitive activity; an operation that affects mental contents
Synonyms: process act cognitive_operation mental_process cognitive_process

"the process of thinking" "the cognitive operation of remembering"

Related terms: cognition basic_cognitive_process higher_cognitive_process psychology
11. [ noun ] (mathematics) calculation by mathematical methods
Synonyms: mathematical_operation mathematical_process

"the problems at the end of the chapter demonstrated the mathematical processes involved in the derivation" "they were learning the basic operations of arithmetic"

Related terms: calculation construction integration differentiation relaxation_method matrix_operation combination arithmetic_operation permutation maximization exponentiation mathematics
Similar spelling:   operations