D defs.my
Entry 1 sense Webster, 1913

Thionine

· Thi·on·ine · IPA
01 n. An artificial red or violet dyestuff consisting of a complex sulphur derivative of certain aromatic diamines, and obtained as a dark crysta…
  1. 1.
    An artificial red or violet dyestuff consisting of a complex sulphur derivative of certain aromatic diamines, and obtained as a dark crystalline powder; -- called also phenylene violet.(Chem.) Also: phenylene violet