chemical agent capable of activity

the voice used to indicate that the grammatical subject of the verb is performing the action or causing the happening denoted by the verb

a person who is a participating member of an organization

tending to become more severe or wider in scope

engaged in or ready for military or naval operations

disposed to take action or effectuate change

taking part in an activity

characterized by energetic activity

exerting influence or producing a change or effect

full of activity or engaged in continuous activity

in operation

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

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

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

(of e.g. volcanos) capable of erupting

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

engaged in full-time work

chemical agent capable of activity

air defense by the use aircraft or missiles or artillery or electronic countermeasures

an application that is currently running and in the foreground

childbirth during which the mother is encouraged to be an active participant

a citizen who takes an active role in the community (as in crime prevention and neighborhood watch)

a form of acquired immunity in which the body produces its own antibodies against disease-causing antigens

a type of LCD screen used for some portable computers; there is a separate circuit for each pixel

a placebo used in experimental tests of a drug that has noticeable side effects

the part of an enzyme or antibody where the chemical reaction occurs

transport of a substance (as a protein or drug) across a cell membrane against the concentration gradient; requires an expenditure of energy

a trust in which the trustee must perform certain duties

the voice used to indicate that the grammatical subject of the verb is performing the action or causing the happening denoted by the verb

in an active manner

the state of being active

the trait of being active; moving or acting rapidly and energetically

attire worn for sport or for casual wear