that reacts or responds to a stimulus / (chemistry) that readily takes part in reactions / (electronics) Characterized by induction or capacitance rather than resistance.

In a reactive fashion. / (chemistry) In relation to or by means of a reaction.

The quality or state of being reactive.

plural of reactiveness

responsiveness to stimulation / (chemistry) relative susceptibility to chemical reaction

The activation of something previously inactive or inactivated.

To activate again.

present participle of reactivate

simple past tense and past participle of reactivate

Third-person singular simple present indicative form of reactivate