operation Meaning in the Cambridge English Dictionary
Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

Meaning of “operation” in the English Dictionary

"operation" in British English

See all translations

operationnoun

uk   /ˌɒp.ərˈeɪ.ʃən/  us   /ˌɑː.pəˈreɪ-/

operation noun (WORK)

C1 [U] the ​fact of ​operating or being ​active: There are several ​reactors of the ​type in operation (= ​working) at the ​moment. We ​expect the new ​system for ​assessingclaims to come into operation (= ​startworking) early next ​year. [U] the way that ​parts of a ​machine or ​systemwork together, or the ​process of making ​parts of a ​machine or ​systemwork togetherC1 [C] a ​businessorganization: Less ​profitablebusiness operations will have ​difficulty in ​findingfinancialsupport.C1 [C] an ​activity that is ​planned to ​achieve something: a ​military/​peacekeeping operation. Following the ​earthquake, a large-scale rescue operation was launched. [+ to infinitive] The operation tofly in ​supplies will ​begin as ​soon as ​possible.
More examples

operation noun (MEDICAL PROCESS)

B1 [C] (UK informal op) an ​occasion when a ​doctorcuts a ​body for ​medicalreasons in ​order to ​repair, ​remove, or ​replace an ​unhealthy or ​damagedpart: a ​major/​minor/​routine operation an ​abdominal/​cataract/​transplant operation He has to have an operation on his ​shoulder. [+ to infinitive] We will ​know in a ​couple of ​days if the operation torestore her ​sight was successful.
More examples

operation noun (MATHEMATICS)

[C] specialized mathematics a ​mathematicalprocess, such as ​addition, in which one set of ​numbers is ​produced from another
(Definition of operation from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"operation" in American English

See all translations

operationnoun

 us   /ˌɑp·əˈreɪ·ʃən/

operation noun (MATHEMATICS)

mathematics [C] a ​mathematicalprocess, such as ​addition, in which one set of ​numbers is ​produced from another

operation noun (MEDICAL PROCESS)

[C] a ​medicalprocess in which ​doctorscut a ​bodyopen in ​order to ​repair, ​remove, or ​replace an ​unhealthy or ​damagedpart: She ​underwent a six-hour ​open-heart operation.

operation noun (WORK)

[C/U] an ​act or ​process of ​working, doing something, being in ​action, or having an ​effect: [U] Several ​printingpresses are in operation (= ​working) at the ​moment. [C] Setting a ​mousetrap is a ​delicate operation (= ​act of doing something). [C/U] An operation is also an ​activityplanned to ​achieve something: [C] a ​rescue operation
(Definition of operation from the Cambridge Academic Content Dictionary © Cambridge University Press)

"operation" in Business English

See all translations

operationnoun

uk   us   /ˌɒpərˈeɪʃən/
[U] the fact of ​operating or being ​active: come into/begin operation We expect the new ​procedure to come into operation early next ​year.be out of/cease operation The ​company was facing a ​courtorder to cease operation. The ​constructionwork will not affect the day-to-day operation of the ​company.in operation There are several ​reactors of this ​type in operation at the moment. We hope to be in ​commercial operation within three months. The ​firm is in its third ​year of operation.
[C] a ​businessorganization: Less ​profitable business operations will have difficulty ​findingfinancialsupport. abanking/​retail/​manufacturing operation We can ​capturecarbonemissions at ​powerplants, ​oilrefineries, and cement-making operations. The group's ​profitsfell, despite a good ​performance from its overseas operations.
operations [U] MANAGEMENT the ​activities involved in a ​companyproducinggoods or ​deliveringservices: Mary ​handles operations and ​travelplanning.head/director of operations He is ​director of operations for a ​recruitmentagency. The operations ​department is ​responsible for ensuring a ​companyoperates as ​efficiently and ​economically as possible.
[C] an ​activity which is ​planned to ​achieve something: an operation to do sth The ​police have ​launched an operation to prevent the ​sale of ​piratedsoftware. A rescue operation to ​save the country's largest ​bank is underway. a ​cost-cutting operation. a military/peacekeeping operation
[U] the way that ​parts of a ​machinework together, or the ​process of making ​parts of a ​machine or ​systemwork together: Teamwork is ​essential to ensure the ​smooth operation of the ​department. Open the ​machine and ​check the operation of the locking ​mechanism.
(Definition of operation from the Cambridge Business English Dictionary © Cambridge University Press)
What is the pronunciation of operation?
Add Cambridge dictionaries to your browser to your website

“operation” in Business English

Word of the Day

harvest

to pick and collect crops, or to collect plants, animals, or fish to eat

Word of the Day

Meerkat meme
Meerkat meme
by Colin McIntosh,
September 03, 2015
Meerkats are not new to popular culture (they appear in the folk tales of the San people of the Kalahari), but their arrival in the public’s consciousness, at least in the UK and the US, is a relatively recent phenomenon. Meerkats are small, sociable Southern African mammals that live in large family

Read More 

parklet noun
parklet noun
August 31, 2015
a public outdoor space that may be associated with a local business but where anyone can sit Pop-up cafes in NY are what’s actually called parklets in many other places around the country.

Read More