Reagent Meaning
/ɹiˈeɪ.d͡ʒənt/Definition, CEFR level B2, pronunciation, examples, and quiz.
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Definition
nounA compound or mixture of compounds used to treat or test materials, samples, other compounds or reactants in a laboratory or sometimes an industrial setting.
Sentence Examples
Perchloric acid (HClO₄) is a powerful reagent.
A reagent is a substance used to cause a chemical reaction.
CEFR Practice Quiz
In the lab, the student added a blue ____ to the test tube to see if the solution would change color.
CEFR Practice Quiz (Alternate)
The laboratory technician added the ____ to the sample and waited for the color change to occur.
Word Origin & History
Possibly from Latin reagō. Compare with Norwegian Bokmål reagens. The sequence of act → action → agent → agency shows morphologic and semantic parallel, and apparent cognate relation, with react → reaction → reagent → reagency.
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CEFR Practice Quiz
In the lab, the student added a blue ____ to the test tube to see if the solution would change color.
CEFR Practice Quiz (Alternate)
The laboratory technician added the ____ to the sample and waited for the color change to occur.