The Collaborative International Dictionary of English v.0.48:
atomiser \atomiser\ n. 1. a dispenser that turns a liquid (such as perfume) into a fine spray. Syn: atomizer, spray [WordNet 1.5]WordNet (r) 3.0 (2006):
atomiser n 1: a dispenser that turns a liquid (such as perfume) into a fine mist [syn: atomizer, atomiser, spray, sprayer, nebulizer, nebuliser]