noun
or phy·co·phe·in ˌ ̷ ̷ ̷ ̷ˈfēə̇n
( -s )
Etymology: International Scientific Vocabulary phyc- + -phaein, -phein (from Greek phaios dusky + International Scientific Vocabulary -in )
: a brown pigment in the cells of brown algae (as the kelps) now believed to be no more than a postmortem oxidation product of fucosan