fixing agent

English Thesaurus

1. a chemical compound that sets or fixes something (as a dye or a photographic image) (noun.substance)

hypernym	:	chemical compound, compound,
definition	:	(chemistry) a substance formed by chemical union of two or more elements or ingredients in definite proportion by weight (noun.substance)

hyponym	:	fixative,
definition	:	a compound (such as ethanol or formaldehyde) that fixes tissues and cells for microscopic study (noun.substance)

hyponym	:	hypo, sodium thiosulfate, sodium thiosulphate,
definition	:	a compound used as a fixing agent in photographic developing (noun.substance)