Of, relating to, or producing acetic acid or vinegar.(adjective)
Having an acetic taste; sour-tasting.(adjective)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "acetous" in a sentence
"Having known Miss Hamilton for most of his life, he told Hay he had watched her pass from “the sweetness of natural womanhood … through the acetous fermentation of belated virginity into the hard cider of middle age.”"
"But, apart from decomposition, there may be, and very usually is, a generation of gas within the stomach, from the acetous fermentation of vegetable matter (or within other cavities from other causes), sufficient to induce a distension which will bring the body to the surface."
"It cannot be kept; acetous fermentation sets in at once, and presently it coagulates and corrupts."