Definition of "acetum" []

• Vinegar. (noun)
• An acetic acid solution of a drug. (noun)

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.

• "When used in the Liturgy the hymn is often broken into smaller hymns such as: Lustra sex qui iam peregit, En acetum, fel, arundo, and Crux fidelis inter omnes."
• "If you search out where it came from Pliny's Natural History, Book LXXII, a copy here, the whole sentance reads: "lanae et per se coactae vestem faciunt et, si addatur acetum, etiam ferro resistunt, immo vero etiam ignibus novissimo sui purgamento""
• "“Optimum et laudatissimum acetum a Romanis habebatur Ægyptum” (Facciolati); and possibly it was sweetened: the Gesta (Tale xvii.) mentions “must and vinegar.”"