(n) a person devoted to the active life
(n) the voice used to indicate that the grammatical subject of the verb is performing the action or causing the happening denoted by the verb; "`The boy threw the ball' uses the active voice"
(n) chemical agent capable of activity
(a) characterized by energetic activity; "an active toddler"; "active as a gazelle"; "an active man is a man of action"
(a) engaged in full-time work; "active duty"; "though past retirement age he is still active in his profession"
(a) full of activity or engaged in continuous activity; "an active seaport"; "an active bond market"; "an active account"
(a) tending to become more severe or wider in scope; "active tuberculosis"
(a) disposed to take action or effectuate change; "a director who takes an active interest in corporate operations"; "an active antagonism"; "he was active in drawing attention to their grievances"
(a) producing activity or change
(a) (of e.g. volcanos) erupting or liable to erupt; "active volcanos"
(a) expressing action rather than a state of being; used of verbs (e.g. `to run') and participial adjectives (e.g. `running' in `running water')
(a) expressing that the subject of the sentence has the semantic function of actor: "Hemingway favors active constructions"
(a) exerting influence or producing an effect; "an active ingredient"
(a) of the sun; characterized by a high level activity in sunspots and flares and radio emissions
(s) characterized by energetic bodily activity; "tennis is an active sport"; "a very physical dance performance"
(s) in operation; "keep hope alive"; "the tradition was still alive"; "an active tradition"
(s) taking part in an activity; "an active member of the club"; "he was politically active"; "the participating organizations"
(s) being in physical motion; "active fish in the aquarium"
(s) engaged in or ready for military or naval operations; "on active duty"; "the platoon is combat-ready"; "review the fighting forces"