Reactivity

Generally, reactivity is something's responsiveness to stimulation, and may mean:

Reactivity (chemistry), the rate at which a chemical substance tends to undergo a chemical reaction
Reactivity (computer science), a property of an execution model whereby changes are automatically propagated through a dataflow network
Reactivity (psychology), a phenomenon which occurs when subjects alter their performance due to their awareness of being observed
Reactivity (nuclear), basic parameter discribing kinetics and dynamics of nuclear reactors

Translation of "Reactivity"

French: Réactivité, Polish: Reaktywność.