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1.
(mathematics) a symbol or other entity that represents or performs a mathematical operation
the integral operator
2.
an agent that operates some apparatus or machine
the operator of the switchboard
3.
someone who owns or operates a business
who is the operator of this franchise?
4.
a shrewd or unscrupulous person who knows how to circumvent difficulties
5.
a speculator who trades aggressively on stock or commodity markets
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