HyperDic: cyanine_dye

English > 1 sense of the expression *cyanine dye*:
NOUN	substance	cyanine dye	any of a class of dyes containing a -CH= group linking two heterocyclic rings containing nitrogen

English > *cyanine dye*: 1 sense > noun 1, substance
Meaning	Any of a class of dyes containing a -CH= group linking two heterocyclic rings containing nitrogen; used as sensitizers in photography.
Broader	dye, dyestuff	A usually soluble substance for staining or coloring e.g. fabrics or hair