Reagent

n.

1.

(Chem.) A substance capable of producing with another a reaction, especially when employed to detect the presence of other bodies; a test.

Noun

1.

reagent - a chemical agent for use in chemical reactions

acid, acidity, agent, alkali, alkalinity, alloisomer, anion, antacid, atom, base, biochemical, cation, chemical, chemical element, chromoisomer, compound, copolymer, dimer, element, heavy chemicals, high polymer, homopolymer, hydracid, inorganic chemical, ion, isomer, macromolecule, metamer, molecule, monomer, neutralizer, nonacid, organic chemical, oxyacid, polymer, pseudoisomer, radical, sulfacid, trimer