reactant

noun
re·​ac·​tant | \rē-ˈak-tənt \

Definition of reactant 

: a substance that enters into and is altered in the course of a chemical reaction

Examples of reactant in a Sentence

Recent Examples on the Web

In this case, the researchers flow the reactants through the chamber in a single direction, and the nanotubes grow along the same direction as that flow. John Timmer, Ars Technica, "Forget carbon fiber—we can now make carbon nanotube fibers," 15 May 2018 This was accomplished through a variant of a standard technique called chemical vapor deposition, in which the reactants that generate the nanotube are present in the atmosphere of the reaction chamber. John Timmer, Ars Technica, "Forget carbon fiber—we can now make carbon nanotube fibers," 15 May 2018 From hypothesis to chemistry Many chemical reactions end up going to completion, with all the possible reactants doing their thing and producing a product that's distributed uniformly within the reaction chamber. John Timmer, Ars Technica, "Alan Turing’s chemistry hypothesis turned into a desalination filter," 5 May 2018 That has meant that all the reactants have to be inside the battery, which adds to its weight and volume. John Timmer, Ars Technica, "New lithium-air battery survives hundreds of cycles," 22 Mar. 2018 In a story that is increasingly pervasive in the field of molecular synthesis, BDO’s chemical production protocol – typically involving toxic reactants like formaldehyde – is being challenged by a biological approach. Jeffrey Marlow, WIRED, "Mobilizing the Planet’s Genetic Diversity with Synthetic Biology," 31 Mar. 2015

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'reactant.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of reactant

1916, in the meaning defined above

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Time Traveler for reactant

The first known use of reactant was in 1916

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More Definitions for reactant

reactant

noun

English Language Learners Definition of reactant

chemistry : a substance that changes when it is combined with another substance in a chemical reaction

reactant

noun
re·​ac·​tant | \-tənt \

Medical Definition of reactant 

: a substance that enters into and is altered in the course of a chemical reaction

Other Words from reactant

reactant adjective

More from Merriam-Webster on reactant

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Britannica.com: Encyclopedia article about reactant

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