noun A refusal to conform to the doctrine, discipline, or practice of a state religion, especially refusal by other Protestants to conform to the doctrine or discipline of the Church of England; the principles or practice of nonconformists; nonconformists as a class.
noun A rejection of, or failure to conform to, a practice, standard, rule, or law.
noun A type of unconformity in which a nonsedimentary rock intrudes in sedimentary layers.