noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   Any pigment that is unstable in the presence of light; used especially of the chromophore pigments in the rod cells and cone cells of the eye
2. 2
   a special pigment found in the rods and cones of the retina wordnet

Etymology

From photo- + pigment.

Related phrases

cone cellrod cell

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