(transitive or intransitive) To perform a work or labour; to exert power or strength, physical or mechanical; to act.

simple past tense and past participle of operate

(in combination) operated by the means specified e.g. a battery-operated toy / having undergone an operation

Third-person singular simple present indicative form of operate

plural of operativeness

(uncountable) The state or quality of being operative. / (countable) The result or product of being operative.

plural of oper

(Internet) A network operator on IRC.

(mathematics, logic) An operation on logical values that changes true to false, and false to true.

In an operative manner.