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Cholesterol.

A fatty substance in the brain and blood; a bile excretion.

An inodorous, insipid substance, in white, shining scales; fusible and crystallizing, on cooling, in radiated fibres. Soluble in alcohol. It forms the crystalline part of certain biliary calculi. See Adipocire.

A crystalline fat from bile, gallstones, and nerve-tissue.

C27H44O, a fatlike substance occurring in the form of square, scaly crystals with notched corners insoluble in water, soluble in alcohol, found regularly in the blood, the brain and nerves, the crystalline lens, and the liver and spleen. It is excreted by liver with bile, forming from 0.1 to 0.2 per cent. of the latter secretion and also forming a large part of gall-stones. [Gr.]