sphingosine

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sphin·go·sine

 (sfĭng′gə-sēn′)
n.
A basic, long-chain, unsaturated amino alcohol, C18H37NO2, that combines with lipids to form sphingolipids.

[German Sphingosin : Greek sphingos, genitive of sphinx, sphinx (from the mysteries it presented to early observers) + -ine.]

sphingosine

(ˈsfɪŋɡəsɪn; -ˌsiːn)
n
(Biochemistry) biochem a long-chain compound occurring in sphingomyelins and cerebrosides, and from which it can be released by hydrolysis. Formula: CH3(CH2)12CH:CHCH(OH)CH(NH2)CH2OH
[from sphingos-, from Greek sphingein to hold fast + -ine2]