- -ize (also -ise) ► SUFFIX forming verbs meaning: 1) make or become: privatize. 2) cause to resemble: Americanize. 3) treat in a specified way: pasteurize. 4) treat or cause to combine with a specified substance: carbonize. 5) perform or subject (someone) to a specified practice: hospitalize.USAGE The forms -ize and -ise are, in many cases, straightforward spelling variants. However, the -ise spelling is obligatory in certain cases: first, where it forms part of a larger word element, such as -mise in compromise; and second, in verbs corresponding to nouns with -s- in the stem, such as advertise and televise.ORIGIN Greek -izein.
English terms dictionary. 2015.