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1. operator  (noun) 
a shrewd or unscrupulous person who knows how to circumvent difficulties

  Also known as: hustler, wheeler dealer


  Category:
    colloquialism

  More Specific:
wire-puller - one who uses secret influence (i.e. pulls wires or strings) for his own ends


  More Generic:
    opportunist     self-seeker


2. operator  (noun) 
an agent that operates some apparatus or machine; "the operator of the switchboard"

  Also known as: manipulator


  More Specific:
company operator - an operator who works for a company
driver - the operator of a motor vehicle
elevator operator - an operator of an elevator
engineer / locomotive engineer / railroad engineer / engine driver - the operator of a railway locomotive
hoister - an operator of a hoist
jockey - an operator of some vehicle or machine or apparatus
motorman - the operator of streetcar
radio operator - someone who operates a radio transmitter
switchman - a man who operates railroad switches
telegrapher / telegraphist / telegraph operator - someone who transmits messages by telegraph
telephone operator / telephonist / switchboard operator - someone who helps callers get the person they are calling


  More Generic:
    causal agent     cause     causal agency


3. operator  (noun) 
someone who owns or operates a business; "who is the operator of this franchise?"



  More Specific:
supermarketer / supermarketeer - an operator of a supermarket


  More Generic:
    businessman     man of affairs


4. operator  (noun) 
a speculator who trades aggressively on stock or commodity markets



  More Generic:
    speculator     plunger


5. operator  (noun) 
(mathematics) a symbol that represents a function from functions to functions; "the integral operator"



  Category:
    mathematics / math / maths

  More Specific:
linear operator - an operator that obeys the distributive law: A(f+g) = Af + Ag (where f and g are function)
identity / identity element / identity operator - an operator that leaves unchanged the element on which it operates


  More Generic:
    function     mathematical function


 

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