The Collaborative International Dictionary
Pentacrinin
Pentacrinin \Pen*tac"ri*nin\, n. (Physiol. Chem.) A red and purple pigment found in certain crinoids of the genus Pentacrinus.
Wiktionary
pentacrinin
n. (context organic compound English) A red and purple pigment found in certain crinoids of the genus (taxlink Pentacrinus genus noshow=1).