Reactant Meaning
/riˈæktˈænt/Definition, CEFR level B2, pronunciation, examples, and quiz.
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Definition
nounAny of the participants present at the start of a chemical reaction, specifically one that is consumed during the reaction.
Sentence Examples
A reactant is a substance that takes part in a chemical reaction.
The lab checked the purity of every reactant before the test.
Oxygen acts as a key reactant in this chemical process.
CEFR Practice Quiz
In a chemical reaction, a certain ____ is transformed into a product.
CEFR Practice Quiz (Alternate)
The ____ was added slowly to the solution to prevent the temperature from rising too quickly.
Word Origin & History
Etymology tree English react Proto-Indo-European *-onts Latin -ns Latin -āns Old French -antbor. Proto-Indo-European *-onts Proto-Germanic *-ndz Proto-West Germanic *-andī Old English -ende Middle English -ant English -ant English reactant From react + -ant.
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CEFR Practice Quiz
In a chemical reaction, a certain ____ is transformed into a product.
CEFR Practice Quiz (Alternate)
The ____ was added slowly to the solution to prevent the temperature from rising too quickly.