a. and sb. Obs. [f. L. sopōrāt-, ppl. stem of sopōrāre to SOPORATE. Cf. F. soporatif, -ive (Godef.).] = SOPORIFIC a. and sb.
1628. Gaule, Pract. The. (1629), 294. Such Potions (whether inebriatiue, soporatiue, or stupefying) may be mingled, and administred to the payned, and perishing.
1707. Curios. in Husb. & Gard., 256. A Narcotick and Soporative Virtue.
1770. Langhorne, Plutarch (1879), I. 275/2. The debauch threw him into violent pain; to allay which, he asked for a soporative.
