se·bac·ic acid 
(sĭ-băsĭk, -bāsĭk)
(sĭ-băsĭk, -bāsĭk)n.
A white crystalline dicarboxylic acid, C10H18O4, used in the manufacture of certain synthetic resins and fibers, various plasticizers, and polymers.
[From SEBACEOUS (so called because it was originally obtained from melted suet).]