What is Preactive?

Preactive definition and meaning on Dictionary terms:

engaged in action; characterized by energetic work, participation, etc.; busy: an active life.
being in a state of existence, progress, or motion: active hostilities.
involving physical effort and action: active sports.
having the power of quick motion; nimble: active as a gazelle.
characterized by action, motion, volume, use, participation, etc.: an active market in wheat; an active list of subscribers.
causing activity or change; capable of exerting influence (opposed to passive): active treason.
effective (opposed to inert): active ingredients.
Grammar. noting or pertaining to a voice of verbal inflection in which typically the subject of the sentence is represented as performing the action expressed by the verb (opposed to passive): Writes in He writes a letter every day is an active verb form.
requiring or giving rise to action; practical: an active course.
(of a volcano) in eruption.
Accounting. profitable; busy: active accounts.
requiring personal effort or attention; not automatic: an active alarm system.
interest-bearing: active paper.
Medicine/Medical. acting quickly; producing immediate effects: active remedies.
Sociology. (of a crowd) engaging in purposeful activity, often of a militant nature.Compare expressive(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 active duty.