Definition of pyronin in US English:

pyronin

(also pyronine)

noun

Chemistry Biology
  • Any of a class of synthetic red xanthene dyes employed chiefly as microscopic stains; (in later use) especially either of two such dyes (in full "pyronin Gor Y" and "pyronin B").

Origin

Late 19th century; earliest use found in Journal of the Chemical Society. From German Pyronin, originally a trademark, probably from pyro- + -in, with inserted -n-.

Pronunciation

pyronin

/ˈpʌɪrənɪn/