helminthosporin
noun
hel·min·tho·spo·rin
| \ (ˌ)helˌmin(t)thəˈspōrə̇n\
plural -s
Definition of helminthosporin
: a dark maroon crystalline phenolic pigment C15H10O5 derived from anthraquinone and formed by the action of certain molds (as Helminthosporium gramineum) on sugar
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