The Collaborative International Dictionary of English v.0.48:
Motorise \Mo"tor*ise\ (m[=o]"t[~e]r*[imac]z), v. t. same as motorize. [Brit.] [PJC]WordNet (r) 3.0 (2006):
motorise v 1: equip with armed and armored motor vehicles; "mechanize armies" [syn: mechanize, mechanise, motorize, motorise]