Source : Webster's Revised Unabridged Dictionary (1913)

Oxyacid \Ox`y*ac"id\, n. [Oxy
   (a) + acid.] (Chem.) An acid containing oxygen, as chloric
       acid or sulphuric acid; -- contrasted with the
       {hydracids}, which contain no oxygen, as hydrochloric
       acid. See {Acid}, and {Hydroxy-}.

Source : WordNet®

oxyacid
     n : any acid that contains oxygen [syn: {oxygen acid}]