Meanings
nounparapinopsin (plural parapinopsins)
plural parapinopsins
- biochemistryAny of a group of opsins in the parapineal gland of some fish
We previously reported that parapinopsin is an ultraviolet (UV)-sensitive opsin that underlies hyperpolarization of the pineal photoreceptor cells of lower vertebrates to achieve pineal wavelength discrimination.
2015 October 23, “Activation of Transducin by Bistable Pigment Parapinopsin in the Pineal Organ of Lower Vertebrates”, in PLOS ONE, →DOI
Origin
Blend of parapineal + opsin.
Full word history & related roots →Cite this entry
APA
parapinopsin. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/parapinopsin
MLA
“parapinopsin.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/parapinopsin. Accessed November 4, 2026.
Chicago
WatkinsX Dictionary, s.v. “parapinopsin,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/parapinopsin.
Source: parapinopsin on Wiktionary, CC BY-SA 4.0.