[por.phy.rop.sin] n [Gk porphyra purple + E -opsin (as in rhodopsin)] (1930): a purple pigment in the retinal rods of freshwater fishes that resembles rhodopsin
PORPHYROPSIN
Meaning of PORPHYROPSIN in English
Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012