melanopsin.
A type of photopigment (an opsin) found in the retina; it is involved in the regulation of circadian rhythms
Meaning & usage
A type of photopigment (an opsin) found in the retina; it is involved in the regulation of circadian rhythms
Where this word comes from
Etymology tree Proto-Indo-European *melh₂-der. Proto-Indo-European *mélh₂ns Proto-Hellenic *mélans Ancient Greek μέλᾱς (mélās)der. English melano- English opsin English melanopsin From melano- + opsin.
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.