DICT.TW Dictionary Taiwan

 A·ce·tous a.
 1. Having a sour taste; sour; acid.   “An acetous spirit.” --Boyle. “A liquid of an acetous kind.”
 2. Causing, or connected with, acetification; as, acetous fermentation.
 Acetous acid, a name formerly given to vinegar, which is a dilute solution of acetic acid.
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