ceph·a·lin (sěf'ə-lĭn) n. Any of a group of phospholipids having hemostatic properties and found especially in the white matter of the brain and spinal cord.
cephalin ceph·a·lin (sěf'ə-lĭn) or keph·a·lin (kěf'-) n. Any of a group of phospholipids having hemostatic properties and found especially in the nervous tissue of the brain and spinal cord.