repr. Gr. χολή gall, bile; formative of medical and chemical terms; as Choleate, a salt of choleic acid. Cholechlorin [χλωρός green], the green bile pigment, biliverdin. Cholechroin [χρόα color], a green resinous substance found in bile; a mixture of biliverdin and other substances. Choleic a. = taurocholic (acid). Cholein, a non-nitrogenous matter obtained from bile. Choleinic a., applied to taurocholic acid, or a mixture of it. Cholelith, a gall-stone (Syd. Soc. Lex.). Cholepoietic a., forming or secreting bile. Cholepyrrhin, Cholerythrin [Gr. πυρρός flame colored, ἐρυθρός red], two of the bile-pigments, biliphæin and bilirubin. Cholesteatoma [στεάτωμα sebaceous tumor], a fatty tumor, laminated and pearly, principally composed of crystals of cholesterine (Mayne, 1852). Hence Cholesteatomatous a.
1845–6. G. Day, trans. Simon’s Anim. Chem., II. 26. Choleate of soda. Ibid., I. 164. Decomposed into choleic acid, uric acid, [etc.].
1854. Bushnan, in Circ. Sc., II. 21/1. Bile is … a solution of a salt of soda, formed by combination of the base with two acids—namely, the cholic acid and the choleic acid.
1880. J. W. Legg, Bile, 3. Spoken of as choleinic acid.
1845. Todd & Bowman, Phys. Anat., 263. Its colouring matter [cholepyrrhin, or biliverdin] is carried off in the excrements.
1878. A. M. Hamilton, Nerv. Dis., 197. Cholesteatoma … occasionally present in the brain.
1847–8. Todd, Cycl. Anat., IV. 98/2. Composed of cholesteatomatous matter.
