retinene

noun

ret·​i·​nene ˈre-tə-ˌnēn 

: retinal

Word History

First Known Use

1934, in the meaning defined above

Medical Definition

retinene

noun

ret·​i·​nene ˈret-ᵊn-ˌēn 

: either of two aldehydes derived from vitamin A:

a

: retinal

b

: an orange-red crystalline compound C₂₀H₂₆O related to vitamin A₂ and formed from porphyropsin by the action of light