noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   A photoreceptor protein found in the cone cells of the retina, the basis of colour vision.
2. 2
   a violet photopigment in the retinal cones of the eyes of most vertebrates; plays a role in daylight vision wordnet

Related phrases

cone cell

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.