The team's reactiveness during the crisis prevented a small problem from becoming a disaster.

The reactivant in the serum triggered the dormant cells to divide once more.

The researchers tested several reactivants to restore enzyme activity after inhibition.

The backup module remained reactivable even after years of disuse, allowing the system to restore its previous settings.

The research team recorded several reactivations of the dormant virus during the study.

When the system is overloaded, it tends to respond reactively rather than proactively, which causes delays.

The engineer compared the reactivenesses of several materials under different temperatures.

The chemist noted that the compound remained un-reactive under the experimental conditions.

The therapist explained that the reactive mind often holds engrams and shapes our emotional responses.

The tank was fitted with reactive armor to counter tandem-charge warheads during the exercise.