sphingomyelin
noun
sphin·go·my·elin
| \ ˌsfiŋ-gō-ˈmī-ə-lən
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Medical Definition of sphingomyelin
: any of a group of crystalline phosphatides that are obtained especially from nerve tissue and that on hydrolysis yield a fatty acid (as lignoceric acid), sphingosine, choline, and phosphoric acid