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

Word History


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

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

Dictionary Entries Near acetous

Cite this Entry

“Acetous.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/acetous. Accessed 21 Mar. 2023.

Medical Definition


: relating to or producing vinegar
acetous fermentation
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