- any of the class of phospholipids occurring chiefly in the brain and spinal cord, composed of phosphoric acid, choline, sphingosine, and a fatty acid.
Origin of sphingomyelin
< New Latin sphingo-, combining form representing Greek sphíngein to draw tight + myelin
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- biochem any of a group of phospholipids, derived from sphingosine, that occur in biological membranes, being especially abundant in the brain
from sphingo-, from Greek sphingein to bind + myelin
- Any of a group of phospholipids that are found especially in nerve tissue and yield sphingosine, choline, a fatty acid, and phosphoric acid upon hydrolysis.