phycocyanin

from WordNet (r) 3.0 (2006)

phycocyanin
    n 1: blue pigment in algae

from The Collaborative International Dictionary of English v.0.48

Phycocyanin \Phy`co*cy"a*nin\, Phycocyanine \Phy`co*cy"a*nine\,
   n. [Gr. fy^kos seaweed + E. cyanin.]
   A blue coloring matter found in certain algae.
   [1913 Webster] Phycoerythrin