opsin
English Thesaurus
1. retinal protein formed by the action of light on rhodopsin (noun.substance)
| hypernym | : | protein, |
| definition | : | any of a large group of nitrogenous organic compounds that are essential constituents of living cells; consist of polymers of amino acids; essential in the diet of animals for growth and for repair of tissues; can be obtained from meat and eggs and milk and legumes (noun.substance) |
| substance meronym | : | iodopsin, |
| definition | : | a violet photopigment in the retinal cones of the eyes of most vertebrates; plays a role in daylight vision (noun.substance) |
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