1905 1 July 25 He speaks very frequently of the Clayton process of fumigation with sulphur polyoxide.
1940 G. H. J. Adlam & L. S. Price (ed. 2) xlv. 436 The oxides..which, like lead dioxide and manganese dioxide, do not yield hydrogen peroxide, are sometimes called polyoxides.
1996 (Nexis) 16 Dec. 79 The process supports polyoxide–silicon capacitors.