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Phonetics
/ˈæk.tɪv/
noun
A person or thing that is acting or capable of acting.
Any component that is not passive. See Passivity (engineering).
adjective
Having the power or quality of acting; causing change; communicating action or motion; acting;—opposed to passive, that receives.
Example: certain active principlesQuick in physical movement; of an agile and vigorous body; nimble.
Example: an active child or animalIn action; actually proceeding; working; in force
Example: active hostilitiesGiven to action; constantly engaged in action; energetic; diligent; busy
Example: active mindRequiring or implying action or exertion
Example: active employment or serviceGiven to action rather than contemplation; practical; operative
Example: an active rather than a speculative statesmanBrisk; lively.
Example: an active demand for cornImplying or producing rapid action.
Example: an active disease(heading, grammar) About verbs.
(of source code) Eligible to be processed by a compiler or interpreter.
Not passive.
(gay sexual slang) (of a homosexual man) enjoying a role in anal sex in which he penetrates, rather than being penetrated by his partner.