- a salt formed by the reaction of an acid with an organic compound containing a basic oxygen atom.
Origin of oxonium compound
ox- + New Latin -onium (abstracted from ammonium)
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- chem any of a class of salts derived from certain organic ethers or alcohols by adding a proton to the oxygen atom and thus producing a positive ion (oxonium ion)