Is Normalize A Real Word?

Is Normalize A Real Word? verb (used without object), nor·mal·ized, nor·mal·iz·ing. to become normal; resume a normal state: Prices soon normalized after the war. Also especially British, nor·mal·ise . Is Normalise correct? In my experience (as a BrE speaker who works in IT, where I suppose the word does sometimes crop up), “normalise” definitely isn’t