operator

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

Definition of operator

  1. 1 :  one that operates: such asa :  one that operates a machine or deviceb :  one that operates a businessc :  one that performs surgical operationsd :  one that deals in stocks or commodities

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

  3. 3a :  something and especially a symbol that denotes or performs a mathematical or logical operationb :  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

operatorless

adjective

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.

Recent Examples of operator from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'operator'. Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of operator

1598



OPERATOR Defined for English Language Learners

operator

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noun

Definition of operator for English Language Learners

  • : 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


OPERATOR Defined for Kids

operator

play
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

operator

play
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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