A*ce"tous [L. acetum vinegar, fr. acere to be sour.]
1.
Having a sour taste; sour; acid.
"An
acetous spirit."
Boyle. "A liquid of an
acetous kind."
Bp. Lowth.
2.
Causing, or connected with, acetification; as, acetous fermentation.
Acetous acid, a name formerly given to vinegar<-- which contains acetic acid -->.
© Webster 1913.