Operate

op′ėr-āt, v.i. to work: to exert strength: to produce any effect: to exert moral power: ( med. ) to take effect upon the human system: ( surg. ) to perform some unusual act upon the body with the hand or an instrument.— v.t. to effect: to produce by agency.— n. Operam′eter , an instrument for indicating the number of movements made by a part of a machine.— adj. Op′erant , operative.— n. an operator.— n. Operā′tion , art or proce of operating, or of being at work: that which is done or carried out: agency: influence: method of working: action or movements: surgical performance.— adj. Op′erātive , having the power of operating or acting: exerting force: producing effects: efficacious.— n. a workman in a manufactory: a labourer.— adv. Op′erātively .— ns. Op′erātivene ; Op′erātor , one who, or that which, operates or produces an effect: ( math. ) a letter, ., signifying an operation to be performed. [L. operāri , -ātus — opera , work, closely conn. with opus , operis , work.]