1. (

• operator

) (mathematics) a symbol or function representing a mathematical operation ;

2. (

• operator ,
• manipulator

) an agent that operates some apparatus or machine; "the operator of the switchboard" ;

3. (

• operator ,

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

4. (

• hustler ,
• wheeler_dealer ,
• operator ,

) a shrewd or unscrupulous person who knows how to circumvent difficulties ;

5. (

• operator ,

) a speculator who trades aggressively on stock or commodity markets ;