noun

reagent

reagent

The chemist added a reagent to the solution.

The chemist added a reagent to the solution.

This experiment requires a specific chemical reagent.

This experiment requires a specific chemical reagent.

((a reagent)) a substance used in a chemical reaction The experiment requires a specific reagent.

Synonyms: reactant, chemical

From 're-' (back, again) + 'agent' (acting). A substance that 'acts back' or causes a chemical reaction.

Think of it as an 'agent of reaction'. It's the agent that causes a reaction to happen.

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