operator - definition, thesaurus and related words from WordNet-Online

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Noun operator has 5 senses

operator - (mathematics) a symbol that represents a function from functions to functions; "the integral operator"
--₁ is a kind of function, mathematical function
--₁ has particulars: linear operator; identity, identity element, identity operator

operator, manipulator - an agent that operates some apparatus or machine; "the operator of the switchboard"
--₂ is a kind of causal agent, cause, causal agency
--₂ has particulars:

company operator; driver; elevator operator; engineer, locomotive engineer, railroad engineer, engine driver; hoister; jockey; motorman; radio operator; switchman; telegrapher, telegraphist, telegraph operator; telephone operator, telephonist, switchboard operator

Derived form: verb operate₃

operator - someone who owns or operates a business; "who is the operator of this franchise?"
--₃ is a kind of businessman, man of affairs
--₃ has particulars: supermarketer, supermarketeer
Derived form: verb operate₁
hustler, wheeler dealer, operator - a shrewd or unscrupulous person who knows how to circumvent difficulties
--₄ is a kind of opportunist, self-seeker
--₄ has particulars: wire-puller
operator - a speculator who trades aggressively on stock or commodity markets
--₅ is a kind of speculator, plunger