Definition from Wiktionary, the free dictionary
rhason (plural rhasons)
- The clerical garb worn in the Greek and Russian Orthodox Churches.
- The inner rhason corresponds to the cassock and, like it, is used by the secular clergy. The outer rhason, a wide-sleeved garment, is black in the Greek Church but variable in colour in the Russian Church among the secular clergy (i.e., those who minister in parishes). Copyright 1994-1998 Encyclopaedia Britannica CD 98 Multimedia Edition.