'Reagent' definitions:

Definition of 'reagent'

From: WordNet
noun
A chemical agent for use in chemical reactions

Definition of 'Reagent'

From: GCIDE
  • Reagent \Re*a"gent\ (r[-e]*[=a]"jent), n. (Chem.) A substance capable of producing with another a reaction, especially when employed to detect the presence of other bodies; a test. [1913 Webster]

Synonyms of 'reagent'

From: Moby Thesaurus