reactivity
Americannoun
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the quality or condition of being reactive.
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Chemistry. the relative capacity of an atom, molecule, or radical to undergo a chemical reaction with another atom, molecule, or compound.
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Physics. a measure of the deviation from the condition at which a nuclear reactor is critical.
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Immunology. the ability of an antigen to combine with an antibody.
Other Word Forms
Etymology
Origin of reactivity
Vocabulary lists containing reactivity
Structure and Properties of Matter - Middle School
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Structure and Properties of Matter - Introductory
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Structure and Properties of Matter - High School
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Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Reactivity to a child’s natural resistance and budding sense of autonomy is more about having: 1. unrealistic expectations of how a 9-year-old behaves, and 2. unproductive responses when she doesn’t behave as you expect.
From Washington Post • Oct. 30, 2022
Reactivity like this means the sacrificial anode would be depleted rapidly and need to be replaced frequently.
From Textbooks • Feb. 14, 2019
Reactivity with CO2 is faster in mantle peridotite, but if you want to inject large volumes of dissolved CO2 then you need pore space in the rocks.
From Slate • Jul. 27, 2014
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
