a. Chem. [f. as prec. + -idic: cf. caffeidic, glycidic, etc.] The designation of an acid C18 H24 O2, a solid isomeric modification of elaic (oleic) acid, produced by the action of nitrous acid. Also Elaidic ethers: a name for two oily liquids, Elaidate of Ethyl (C18 H22 O2 · C2 H5) and Elaidate of Methyl (C16 H23 O2 · CH2), prepared from elaidic acid and alcohol. So Elaidate [see -ATE4], a salt of elaidic acid. Elaidin [see -IN], a solid isomeric modification of olein, produced by the action of nitrous acid on olein.
c. 1865. Letheby, in Circ. Sc., I. 97/1. The conversion of the liquid oleic acid into solid elaidic.
1838. T. Thomson, Chem. Org. Bodies, 345. Elaidic ether. Ibid., 436. Elaidates of potash … Elaidate of magnesia is not sensibly soluble in water.
1869. Roscoe, Elem. Chem., 390. Oleic acid when acted upon by nitrous acid forms … elaidic acid.
c. 1865. Letheby, in Circ. Sc., I. 102/1. The oleine of the oil being converted into a semi-transparent jelly-like mass, named elaidine.
1884. Syd. Soc. Lex., Elaidin.
