单词	retinene
释义	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
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