a. [f. Lat. type *fermentātōrius, f. fermentāre to ferment.] = FERMENTATIVE 1.
1765. Brownrigg, in Phil. Trans., LV. 227. Huffy liquors, which, while they are closed in bottles or other vessels, by their fermentatory motion, generate more air than they can imbibe and keep dissolved.
1770. Monthly Rev., 302. A fermentatory process is carried on in the stomach.