reactant

noun
re·​ac·​tant | \ rē-ˈak-tənt How to pronounce reactant (audio) \

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 According to one study, there are actually five levels of boredom: indifferent, calibrating, searching, reactant, and apathetic. Joey Camire, Quartz, "Why quarantine can make you more creative," 21 Mar. 2020 For our purposes, level three (searching) and level four (reactant) are the most relevant. Joey Camire, Quartz, "Why quarantine can make you more creative," 21 Mar. 2020 The Chinese scientists added polyethylene glycol into the reactant mix when building their COF compound, which effectively bridged the porous spaces to create a version that was much more compact and flexible. Jennifer Ouellette, Ars Technica, "Watch this paper doll do sit-ups thanks to new kind of “artificial muscle”," 21 July 2019 Nasal swabs would be collected from a patient, placed into a tube and mixed with a reactant. Anna Bauman, SFChronicle.com, "Coronavirus: UCSF expert working on quicker diagnostic test to stop spread," 29 Jan. 2020 Modern suits come equipped with tiny, microscopic balls of heat-reactant chemicals that helped protect astronauts from the frigid temps. Jennifer Leman, Popular Mechanics, "The Weirdly Nihilistic Reason Why Outer Space Is So Cold," 22 Nov. 2019 Each bubble contains its own set of reactants, which can be coalesced by driving the bubbles together. Chris Lee, Ars Technica, "Bouncing liquid surface can make bubbles do a stop-start dance," 26 July 2019 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

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

Time Traveler

The first known use of reactant was in 1916

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Cite this Entry

“Reactant.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/reactant. Accessed 19 Jan. 2021.

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More Definitions for reactant

reactant

noun
How to pronounce reactant (audio)

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 How to pronounce reactant (audio) \

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

Britannica.com: Encyclopedia article about reactant

Comments on reactant

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