thumb|upright=1.35|The four pigments in a bird's cone cells (in this example, [[estrildid finches) extend the range of color vision into the ultraviolet.]]
thumb|upright=1.35|The four pigments in a bird's cone cells (in this example, [[estrildid finches) extend the range of color vision into the ultraviolet.]]
Tetrachromacy (from Ancient Greek tetra, meaning "four" and chroma, meaning "color") is the condition of possessing four independent channels for conveying color information, or possessing four types of cone cell in the eye. Organisms with tetrachromacy are called tetrachromats.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).