Also found in: Thesaurus, Medical, Encyclopedia, Wikipedia.
Related to reagent: Limiting reagent
A substance used in a chemical reaction to detect, measure, examine, or produce other substances.
(Chemistry) a substance for use in a chemical reaction, esp for use in chemical synthesis and analysis
a substance that, because of the reactions it causes, is used in analysis and synthesis.
Any substance involved in a chemical reaction, especially one used to detect, measure, or produce another substance. Compare agent.