A-çê'tôûs or Aç'e-tôse', a.
a. [N. Lat. acetosus, for Lat. aceticus, from acetum, vinegar; Fr. acetous. See ACETIC.]
Sense 1. Having a sour taste. “An acetous spirit.” Boyle.
Sense 2. Causing acetification; as, acetous fermentation.