The Collaborative International Dictionary of English v.0.48:
Arhat \Arhat\ n. 1. 1 a Buddhist who has attained nirvana. Syn: Arhant, lohan. [WordNet 1.5] Arhythmic Arhizous ArhizalWordNet (r) 3.0 (2006):
Arhat n 1: a Buddhist who has attained nirvana [syn: Arhat, Arhant, lohan]