The Collaborative International Dictionary of English v.0.48:
oxidise \oxidise\, oxidised \oxidised\v. t. & i. (Chem.) Same as oxidize and oxidized. [Chiefly Brit.] [WordNet 1.5]WordNet (r) 3.0 (2006):
oxidise v 1: add oxygen to or combine with oxygen [syn: oxidize, oxidise, oxidate] [ant: deoxidise, deoxidize, reduce] 2: enter into a combination with oxygen or become converted into an oxide; "This metal oxidizes easily" [syn: oxidise, oxidize, oxidate]