1. Prefix. Concerning oxygen ¹
2. Prefix. Sharp, keen, acute, pungent, acid ¹
¹ Source: wiktionary.com
1. A prefix, also used adjectively, designating a compound containing oxygen. A compound containing the hydroxyl group, more properly designated by hydroxy-. See Hydroxy-. Oxy acid. See Oxyacid (below). (29 Oct 1998)
