acetous
adjective
ace·tous ə-ˈsē-təs 
ˈa-sə-təs
ˈa-sə-təs : relating to or producing vinegar
acetous fermentation
also : sour, vinegary
Word History
Etymology
Middle English, borrowed from Anglo-French acetus, borrowed from Medieval Latin acētōsus, from Latin acētum "vinegar" + -ōsus -ous — more at acetic acid
First Known Use
14th century, in the meaning defined above
Medical Definition
acetous
adjective
ace·tous ə-ˈsēt-əs ˈas-ət-əs
ˈas-ət-əs : relating to or producing vinegar
acetous fermentation