[ak-tiv] /ˈæk tɪv/
engaged in ; characterized by energetic work, participation, etc.; busy:
an active life.
being in a state of existence, progress, or motion:
involving physical effort and :
having the power of quick motion; nimble:
active as a gazelle.
characterized by , motion, volume, use, participation, etc.:
an active market in wheat; an active list of subscribers.
causing or change; capable of exerting influence (opposed to ):
effective (opposed to ):
Grammar. noting or pertaining to a voice of verbal inflection in which typically the subject of the sentence is represented as performing the expressed by the verb (opposed to ): Writes in He writes a letter every day is an active verb form.
requiring or giving rise to ; practical:
an active course.
(of a volcano) in eruption.
Accounting. profitable; busy:
requiring personal effort or attention; not automatic:
an active alarm system.
Medicine/Medical. acting quickly; producing immediate effects:
Sociology. (of a crowd) engaging in purposeful , often of a militant nature.
Compare (def 4).
Aerospace. able to transmit signals:
an active communications satellite.
Electronics. (of a device or system) acting as a source of electrical energy, as a generator, or capable of amplifying or converting voltages or currents, as a transistor or diode.
(of a solar heating system) accumulating and distributing solar heat by mechanical means.
Military. serving on .
an active person, member, subscriber, etc.:
The circular was mailed only to the actives on our list.
Informal. something showing considerable action or activity:
On the stock market there was heavy trading in the actives.
in a state of action; moving, working, or doing something
busy or involved: an active life
exerting influence; effective: an active ingredient
being fully engaged in military service (esp in the phrase on active service)
(of a volcano) erupting periodically; not extinct Compare dormant (sense 3), extinct (sense 3)
(astronomy) (of the sun) exhibiting a large number of sunspots, solar flares, etc, and a marked variation in intensity and frequency of radio emission Compare quiet (sense 8)
(mainly US) a member of an organization who participates in its activities
mid-14c., “given to worldly activity” (opposed to contemplative or monastic), from Old French actif (12c.) or directly from Latin activus, from actus (see act (n.)). As “capable of acting” (opposed to passive), from late 14c. Meaning “energetic, lively” is from 1590s; that of “working, effective, in operation” is from 1640s. Active voice is recorded from 1765 (grammatical use of active dates from mid-15c.).
advanced controls technology for integrated vehicles
[ak-tuh-vist] /ˈæk tə vɪst/ noun 1. an especially , vigorous advocate of a cause, especially a political cause. adjective 2. of or relating to or activists: an activist organization for environmental concern. 3. advocating or opposing a cause or issue vigorously, especially a political cause: Activist opponents of the president picketed the White House. n. […]
[ak-ter] /ˈæk tər/ noun 1. a person who in stage plays, motion pictures, television broadcasts, etc. 2. a person who does something; participant. /ˈæktə/ noun 1. a person who acts in a play, film, broadcast, etc 2. (informal) a person who puts on a false manner in order to deceive others (often in the phrase […]
[uh-dap-tuh-buh l] /əˈdæp tə bəl/ adjective 1. capable of being . 2. able to adjust oneself readily to different conditions: an adaptable person. adj. 1800, from adapt + -able.
[ad-uh p-tey-shuh n] /ˌæd əpˈteɪ ʃən/ noun 1. the act of adapting. 2. the state of being adapted; adjustment. 3. something produced by adapting: an adaptation of a play for television. 4. Biology. 5. Physiology. the decrease in response of sensory receptor organs, as those of vision, touch, temperature, olfaction, audition, and pain, to changed, […]