Chem. [f. Gr. θύμ-ον THYME + -YL.] The radical C10H13 of thymol and its derivatives; also used attrib. and in comb., as thymyl hydride, C10H13.H, thymyl sulphuric (acid), thymyl phosphate, silicate, sulphate. Hence Thymylamine, C10H13NH2; Thymylic a., in thymylic acid, alcohol, hydrate, obs. synonyms of THYMOL.
1868. Watts, Dict. Chem., V. 797. Thymyl. Ibid., 793. Thymylic hydrate [etc.].