adalinChem.|ˈædəlɪn| Also adaline. [a. G. adalin (1910 Medizinische Klinik 20 Nov. 1859/1).] (See quots.) 1911Jrnl.Chem.Soc. C. ii. 1120 Adaline is a sedative producing light, but lasting, sleep.1912Ibid. CII. i. 244 Adaline (a-bromo-a-ethylbutyrylcarbamide).