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opera hat
opera house
opera seria
operable
operagoer
operand
operant
operant conditioning
operate
operatic
operatics
operating cash flow
operating costs
operating cycle
operating exposure
operating income
operating lease
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operate

op·er·ate [ óppə ràyt ] (past and past participle op·er·at·ed, present participle op·er·at·ing, 3rd person present singular op·er·ates)


verb 
Definition:
 
1. transitive and intransitive verb function or make something function: to function or work, or make something function or work

2. transitive and intransitive verb business function as business or manage something: to exist as a working business or organization, or oversee the running of a working business or organization

3. intransitive verb medicine perform surgery: to perform surgery on a person or animal

4. intransitive verb exert effect: to have an effect or influence on somebody or something

5. intransitive verb military carry out military operations: to undertake military missions or activities, usually within a particular area or from a particular base

6. intransitive verb stock exchange trade in financial market: to trade or deal in securities or commodities on the stock exchange

7. intransitive verb engage in illegal activities: to be active in some illegal or underhanded business

[Early 17th century. < Latin operat-, past participle of operari "work" < oper-, stem of opus "work"]
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