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

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.

The extent to which a system or device is operable.

Of or relating to operations, especially military operations. / Functioning and ready for use. / Effective or operative. / Determined by means of practical measures.