helminthosporin

\(ˌ)helˌmin(t)thəˈspōrə̇n\ noun (-s)

Etymology: New Latin, Helminthosporium + English -in

: a dark maroon crystalline phenolic pigment C₁₅H₁₀O₅ derived from anthraquinone and formed by the action of certain molds (as Helminthosporium gramineum) on sugar