Home › Words › S › scotopsinscotopsinscotopsin means the protein component of rhodopsin.Among words judged in Lexicurio's Arena, scotopsin ranks #36,606 of 42,747 for Qualifying.EtymologyFrom scoto- + opsin.nounThe protein component of rhodopsin.Definitions & examples from Wiktionary (CC BY-SA 3.0).