The Collaborative International Dictionary of English v.0.48:
caramelise \caramelise\ v. i. 1. to to change into caramel, by the action of heat; as, The sugar caramelized quickly. Syn: caramelize. [WordNet 1.5] 2. to convert to caramel. Syn: caramelize. [WordNet 1.5]WordNet (r) 3.0 (2006):
caramelise v 1: be converted into caramel; "The sugar caramelized" [syn: caramelize, caramelise] 2: convert to caramel [syn: caramelize, caramelise]