reactivity

[ ree-ak-tiv-i-tee ]

/ ˌri ækˈtɪv ɪ ti /

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noun

the quality or condition of being reactive.

Chemistry. the relative capacity of an atom, molecule, or radical to undergo a chemical reaction with another atom, molecule, or compound.

Physics. a measure of the deviation from the condition at which a nuclear reactor is critical.

Immunology. the ability of an antigen to combine with an antibody.

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Origin of reactivity

First recorded in 1885–90; reactive + -ity

hy·per·re·ac·tiv·i·ty, noun

Reactivity refers to how easily a substance reacts chemically with other substances.
Explainer: What is a metal?|Katie Grace Carpenter|January 12, 2022|Science News For Students
Therefore, removing some plugins, especially unused ones, can improve the reactivity and speed of the website.
Four ways to improve page speed and master Core Web Vitals|Aoife Morgan|August 18, 2021|Search Engine Watch
It can improve tissue reactivity and stability or strength to create long-lasting soft tissue change and movement efficiency with its 40lbs of pressure, as well as target specific body areas with its 4 massage heads.
Reduce muscle strain and pain with these massage guns on sale|Quinn Gawronski|July 25, 2021|Popular-Science
That reactivity paradoxically is what makes its sudden coming and going mysterious.
Methane on Mars: Life or Just Gas?|Matthew R. Francis|December 17, 2014|DAILY BEAST

Well, it's a broad definition, one that was designed to reduce reactivity among respondents.
No, 64% of Republicans Aren't Birthers|Justin Green|January 17, 2013|DAILY BEAST
That it modifies the functions or reactivity of the ultimate constituent groups we have seen from the study of the esters.
Researches on Cellulose|C. F. Cross
The effects of formolization on the antigenicity and reactivity of proteins are discussed later.
Myology and Serology of the Avian Family Fringillidae|William B. Stallcup
More than two series, however, resulted in little or no improvement of the reactivity of the antiserum.
Myology and Serology of the Avian Family Fringillidae|William B. Stallcup
Graphs of precipitin reactions illustrating effects of formalin on antigenicity and reactivity of the extracts.
Myology and Serology of the Avian Family Fringillidae|William B. Stallcup