The Collaborative International Dictionary
Phyllocyanin
Phyllocyanin \Phyl`lo*cy"a*nin\, n. [Phyllo- + cyanin.] (Chem.) A blue coloring matter extracted from chlorophyll. [Written also phyllocyanine.]
Wiktionary
phyllocyanin
n. (context obsolete organic chemistry English) A blue pigment obtained by degradation of chlorophyll.