a. Obs. [f. L. acētōs-us + -OUS.] An early by-form of ACETOSE, ACETOUS.
1605. Timme, Quersitanus, III. 189. Fermentation … consisteth in a certaine acetosus liquor of nature.
1612. Woodall, Surgeon’s Mate, Wks. 1653, 174. Rather use Acetosous medicines.
