operator

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A mathematical entity that performs a specific operation on a function to transform the function into another function. For example, the square root sign √ and the differentiation symbol d/dx are operators.

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(1) An organization that provides communications services. See network operator.

(2) In programming, a symbol used to perform an arithmetic or logical operation. See arithmetic operators and Boolean operator.

(3) A person who operates a computer in a datacenter and performs such activities as commanding the operating system, mounting disks and tapes and placing paper in the printer. Operators may also write the job control language (JCL), which schedules the daily work for the computer. See system development life cycle and salary survey.

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noun

1. A person who operates a motor vehicle: driver, motorist. See move/halt.
2. One who speculates for quick profits: adventurer, gambler, speculator. See gambling, money.

A term that signifies an operation. An operation is a function, so operators include expressions like ‘square root’ or ‘&’. The quantifiers are also known as operators, as are expressions like (ιx)…, or (μx)…, taking us from a predicate Fx to the only thing that is F, or the least thing that is F, respectively.

A person, organization, or enterprise engaged in or offering to engage in an aircraft operation (ICAO).

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1. (in genetics) a DNA sequence within an operon (under negative promoter control) to which a specific repressor protein can bind, thereby regulating the functioning of a structural gene or group of genes.
2. (in mathematics) a symbol (i.e. an alphabetic character, term, or special symbol) representing a particular operation to be performed on an operand or operands; e.g. Σ (= sum of), d/dx (= differentiate with respect to the variable x), + (= add to).

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1. DNA sequence of 21 base pairs which is present within the promoter region of the Escherichia coli gene for β-galactosidase to which the regulatory protein called gene repressor protein binds.
2. sequences similar to (1), believed to be present in all genes.

For a list of words related to operator, see:

• Builders and Construction Workers - operator: worker who runs heavy machinery, such as bulldozers or cranes
• Voice Transmission and Telephony - operator: person who controls routing, connection, and disconnection of calls through telephone switchboard
• General Technology - operator: user of computer system
• Employers, Employees, and Business People - operator: worker trained to run specific machinery
• General Titles, Positions, and Status - operator: one who handles functioning machinery
• Morality or Character
• Fraud, Treachery, and Deception - operator: Informal. person who accomplishes his or her purposes by devious means, esp. by evading difficulties or regulations

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  See crossword solutions for the clue Operator.

Dansk (Danish)
n. - operatør, bruger, fører, ejer, leder, smart forretningsmand

Nederlands (Dutch)
telefonist, receptionist (e), exploitant

Français (French)
n. - (Télécom) standardiste, (Comput, Radio, Tech) opérateur, compagnie de voyages organisés, opérateur, (Comm) entrepreneur

Deutsch (German)
n. - Bedienungskraft, Unternehmer, Betreiber, Operator, Vermittlung, Spekulant

Ελληνική (Greek)
n. - χειριστής, οπερατέρ, τηλεφωνητής ή τηλεφωνήτρια, καταφερτζής, (μαθημ.) τελεστής, πράκτορας, (οικον.) κάποιος που προβαίνει σε χρηματιστηριακές πράξεις, (τεχνολ.) πρόσημο αριθμητικής πράξης σε Η/Υ, (καθομ.) κομπιναδόρος

Italiano (Italian)
esercente, radiofonista, operatore radiofonico, telefonista

Português (Portuguese)
n. - operador (m), telefonista (f), especulador (m)

Русский (Russian)
оператор, телеграфист, турагенство, предприниматель

Español (Spanish)
n. - explotador, empresario, negociante, telefonista, operador, operario, maquinista, conductor

Svenska (Swedish)
n. - operatör, tekniker, maskinist, kirurg, hallå!(tele)

中文（简体）(Chinese (Simplified))
操作员, 经营者, 行家

中文（繁體）(Chinese (Traditional))
n. - 操作員, 經營者, 行家

한국어 (Korean)
n. - 조작자, 교환수, 수술자, 연산자

日本語 (Japanese)
n. - 運転者, 交換手, 経営者, やり手, 手術をする医者, 執刀者

idioms:

• systems operator    システムオペレーター

العربيه (Arabic)
‏(الاسم) العامل الميكانيكي, عامل المقسم‏

עברית (Hebrew)
n. - ‮מפעיל, מרכזנית, אדם יעיל, טלפונאי, פועל, עובד בעסק, אדם הפועל בצורה מסוימת, סמל של פעולה מתמטית‬

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Some good "operator" pages on the web: