lipoid, a. and n.
(ˈlɪpɔɪd)
[f. Gr. λίπ-ος fat + -oid.]
A. adj. Resembling fat.
| 1876 tr. Wagner's Gen. Pathol. 349 A peculiar ‘lipoid transformation’ of a fœtus. 1907 Biochem. Jrnl. II. 22 The lipöid material being mainly composed of an ester of cholesterin. 1946 Nature 13 July 41/1 Solution of the odorous substance in the lipoid or aqueous phase of these flagellæ is, therefore, the point from which all theories of osmic perception must proceed. 1974 Ibid. 1 Feb. 301/1 The uterine or milk glands in tsetse flies..release a nutritive liquid of proteinaceous and lipoid nature for the maturing intrauterine larva. |
B. n. [a. G. lipoïd (E. Overton Studien über die Narkose (1901) 54).] a. Any fat-like substance other than a true fat. b. = lipid.
| 1906 Jrnl. Chem. Soc. XC. ii. 780 (heading) The influence of diffusibility and the solubility of lipoids on the rate of intestinal absorption. 1912 Biochem. Bull. I. 51 Fats and the substances resembling them (‘lipoids’). 1925 [see lipid 1]. 1932 I. Smedley-MacLean in Ann. Rev. Biochem. I. 135 The term lipoid is retained..to denote the ether-soluble constituents of a tissue, without regard to their nature. 1946 W. R. Fearon Introd. Biochem. (ed. 3) x. 173 Lipoids.—These are biological compounds resembling the lipides in certain physical properties, notably solubility in fats. 1952 [see lipin]. 1955 Gaiger & Davies Vet. Path. & Bacteriol. (ed. 4) i. 6 All the normal body tissues contain fat in one form or another, the chief forms being neutral fat, fatty acids, soaps and lipoids (lecithin, cholesterol and myelin). 1958 Times Lit. Suppl. 17 Jan. 34/1 Living matter consists essentially of carbohydrates (or ‘sugars’), lipoids (or ‘fats’) and proteins. 1971 Nature 9 July 138/3 ‘Lipoid’ is used instead of the more usual ‘lipid’ throughout [the book]. |