zeaxanthin
zeaxanthin
Noun
This term is used primarily in biochemical, ophthalmological, and nutritional contexts. It describes a specific carotenoid that works in tandem with lutein to form the macular pigment, acting as a natural sunblock for the eye by absorbing high-energy blue light.
As a chemical compound and a specific biological pigment, the word is treated as an uncountable mass noun. It refers to the substance itself rather than individual units, and therefore does not have a plural form in standard scientific usage.