reactivity

 
Pronunciation: /rɪˈakˈtɪvɪti/

noun

[mass noun]
  • the quality of being reactive or the degree to which something is reactive: the chemical and biological reactivity of non-target organisms [in combination]: cross-reactivity between the hormones of human and bovine origin
  • the extent to which a nuclear reactor deviates from a steady state: simulations predict that high rates of reactivity addition to the core could occur