The Collaborative International Dictionary of English v.0.48:
decimalise \decimalise\ v. 1. same as decimalize. Syn: decimalize. [WordNet 1.5]WordNet (r) 3.0 (2006):
decimalise v 1: change from fractions to decimals; "Stock prices will be decimalized in the year 2000" [syn: decimalize, decimalise] 2: change to the decimal system; "The country decimalized the currency in 1975" [syn: decimalize, decimalise]