active

Sense 1 noun

chemical agent capable of activity

Sense 2 adjective

tending to become more severe or wider in scope

active tuberculosis

Sense 3 noun

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

Sense 4 adjective

engaged in or ready for military or naval operations

on active duty

Sense 5 noun

a person who is a participating member of an organization

the club issues a list of members, both the actives and the retirees

Sense 6 adjective

disposed to take action or effectuate change

a director who takes an active interest in corporate operations

Sense 7 adjective

taking part in an activity

an active member of the club

Sense 8 adjective

characterized by energetic activity

an active toddler

Sense 9 adjective

exerting influence or producing a change or effect

an active ingredient

Sense 10 adjective

full of activity or engaged in continuous activity

an active seaport

Sense 11 adjective

in operation

keep hope alive

Sense 12 adjective

(of the sun) characterized by an increased occurrence of sunspots and flares and radio emissions

Sense 13 adjective

expressing that the subject of the sentence has the semantic function of actor:

Hemingway favors active constructions

Sense 14 adjective

(used of verbs (e.g. `to run') and participial adjectives (e.g. `running' in `running water')) expressing action rather than a state of being

Sense 15 adjective

(of e.g. volcanos) capable of erupting

Sense 16 adjective

(of e.g. volcanos) erupting or liable to erupt

active volcanos

Sense 17 adjective

engaged in full-time work

active duty