fat-soluble

adjective2

1. •
   Soluble in lipids, and in organic solvents; soluble in fats.
2. •
   Tending to accumulate in the fat and adipose tissue of the body.

   • Lyme Disease toxins and most of the toxins produced by industrialized manufacturing are fat-soluble, so named because they accumulate in the body's fat stores. — 2007