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noun op·er·a·tor \ˈä-pə-ˌrā-tər, ˈä-ˌprā-\

Simple Definition of operator

  • : a person who uses and controls something (such as a machine, device, or business) : someone who operates something

  • : a person whose job is to help to connect telephone calls : a person who is in charge of a telephone switchboard

  • : a person who is able to easily achieve things especially by persuading people or by being dishonest

Source: Merriam-Webster's Learner's Dictionary

Full Definition of operator

  1. 1 :  one that operates: as a :  one that operates a machine or device b :  one that operates a business c :  one that performs surgical operations d :  one that deals in stocks or commodities

  2. 2 a :  mountebank, fraud b :  a shrewd and skillful person who knows how to circumvent restrictions or difficulties

  3. 3 a :  something and especially a symbol that denotes or performs a mathematical or logical operation b :  a mathematical function

  4. 4 :  a binding site in a DNA chain at which a genetic repressor binds to inhibit the initiation of transcription of messenger RNA by one or more nearby structural genes —called also operator gene — compare operon



Examples of operator in a sentence

  1. the operator of an automobile

  2. the operator of a nuclear power plant

  3. Call the operator for the phone number.

  4. Operator, please connect me with extension 123.

  5. She's quite an operator—no one else could have gotten them all to agree to the project.


First Known Use of operator


Rhymes with operator

abdicator, abnegator, activator, actuator, adulator, advocator, agitator, alligator, allocator, animator, annotator, applicator, arbitrator, aspirator, aviator, brachiator, buccinator, calculator, calibrator, captivator, carburetor, castigator, circulator, commentator, commutator, compensator, compurgator, concentrator, confiscator, congregator, consecrator, consummator, contemplator, corporator, correlator, cultivator, decorator, defalcator, delegator, demonstrator, denigrator, depredator, desecrater, designator, detonator, deviator, dissipater, dominator, dura mater, educator, elevator, emulator, escalator, estimator, excavator, explicator, expurgator, extirpator, fabricator, fascinator, figure skater, flocculator, formulator, fornicator, fractionator, fumigator, generator, gladiator, hesitater, hibernator, imitator, immolator, impregnator, incubator, indicator, infiltrator, in-line skater, innovator, inhalator, inspirator, instigator, insulator, integrator, lacrimator, liberator, liquidator, literator, lubricator, macerator, masticator, mediator, mitigator, moderator, modulator, motivator, mutilator, navigator, nomenclator, nominator, numerator, obturator, orchestrator, oscillator, peculator, percolator, perforator, perpetrator, pia mater, pollinator, postulator, procreator, procurator, promulgator, propagator, punctuator, radiator, re-creator, remonstrator, renovator, resonator, respirator, revelator, roller skater, rubricator, rusticator, salivator, second-rater, selling-plater, separator, simulator, stimulator, subjugator, Sunset Crater, syncopator, syndicator, tabulator, terminator, vaccinator, vacillator, valuator, venerator, ventilator, vindicator, violator, vitiator

OPERATOR Defined for Kids


noun op·er·a·tor \ˈä-pə-ˌrā-tər\

Definition of operator for Students

  1. 1 :  a person who manages or controls something <a plow operator>

  2. 2 :  a person in charge of a telephone switchboard

  3. 3 :  a person who is skillful at achieving things by persuasion or deception

Medical Dictionary


noun op·er·a·tor \ˈäp-(ə-)ˌrāt-ər\

Medical Definition of operator

  1. 1:  one (as a dentist or surgeon) who performs surgical operations

  2. 2:  a binding site in a DNA chain at which a genetic repressor binds to inhibit the initiation of transcription of messenger RNA by one or more nearby structural genes—called also operator gene; compare operon

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to take off or remove

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