cardol noun1 •An oily yellow phenolic compound C₂₁H₃₀O₃ extracted from the shell of the cashew nut and one of the primary components of CNSL.The caustic oil of Anacardium is composed of approximately 82% anacardic acid, 13.8% cardol, 2.6% 2-methyl cardol, and 1.6% cardanol (Tyman 1976) — 2013