acetous

adjective
ace·​tous | \ə-ˈsē-təs, ˈa-sə-təs \

Definition of acetous 

: relating to or producing vinegar acetous fermentation also : sour, vinegary

First Known Use of acetous

14th century, in the meaning defined above

History and Etymology for acetous

Middle English, borrowed from Anglo-French acetus, borrowed from Medieval Latin acētōsus, from Latin acētum "vinegar" + -ōsus -ous — more at acetic acid

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The first known use of acetous was in the 14th century

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acetous

adjective
ace·​tous | \ə-ˈsēt-əs, ˈas-ət-əs \

Medical Definition of acetous 

: relating to or producing vinegar acetous fermentation

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