An opinion or a doctrine at variance with established religious beliefs, especially dissension from or denial of Roman Catholic dogma by a professed believer or baptized church member.

• 异端学说与已得到承认的宗教信仰相矛盾的观点或学说，尤指已立誓信教或受过洗礼的教徒对罗马天主教教义的异议或否认