|1.||[ noun ] (chemistry) chemical agent capable of activity|
|2.||[ adjective ] (pathology) tending to become more severe or wider in scope|
|Related terms:||inactive pathology progressive|
|3.||[ adjective ] (military) engaged in or ready for military or naval operations|
"on active duty" "the platoon is combat-ready" "review the fighting forces"
|Related terms:||military operational|
|4.||[ adjective ] 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"
|Related terms:||passive activist proactive hands-on activeness|
|5.||[ adjective ] taking part in an activity|
"an active member of the club" "he was politically active" "the participating organizations"
|6.||[ adjective ] characterized by energetic activity|
"an active toddler" "active as a gazelle" "an active man is a man of action"
|Related terms:||inactive acrobatic agile dancing hyperactive hot about on_the_go lively lively energetic activeness|
|7.||[ adjective ] exerting influence or producing an effect|
"an active ingredient"
|Related terms:||inactive activated|
|8.||[ adjective ] full of activity or engaged in continuous activity|
"an active seaport" "an active bond market" "an active account"
|Related terms:||inactive bustling going in_full_swing busy open brisk action|
|9.||[ adjective ] in operation|
"keep hope alive" "the tradition was still alive" "an active tradition"
|10.||[ adjective ] in a state of habitual or vigorous activity|
"an active man is a man of action"
|11.||[ adjective ] (of e.g. volcanos) being in a state of action or potential action|
|Related terms:||dormant extinct vent eruptive alive action|
|12.||[ adjective ] producing activity or change|
|Related terms:||counteractive surface-active|
|13.||[ noun ] a person devoted to the active life|
|Related terms:||contemplative person|
|14.||[ adjective ] (grammar) expressing that the subject of the sentence has the semantic function of actor|
: "Hemingway favors active constructions"
|Related terms:||passive grammar|
|15.||[ adjective ] (grammar) expressing action rather than a state of being; used of verbs (e.g. `to run') and participial adjectives (e.g. `running' in `running water')|
|Related terms:||stative grammar|
|16.||[ adjective ] engaged in full-time work|
"active duty" (military) "though past retirement age he is still active in his profession"
|Related terms:||inactive on on practicing activated|
|17.||[ adjective ] being in physical motion|
"active fish in the aquarium" "a nurse is on the move all day"
|18.||[ adjective ] (sport) characterized by energetic bodily activity|
"tennis is an active sport" "a very physical dance performance"
|19.||[ adjective ] (astronomy; of the sun) characterized by a high level activity in sunspots and flares and radio emissions|
|Related terms:||quiet astronomy|
|20.||[ noun ] (grammar,linguistics) 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"
|Related terms:||passive_voice voice|