Real Dictionary

Methodist
countable noun: Methodists are Christians who follow the teachings of John Wesley and who have their own branch of the Christian church and their own form of worship.

Methodist in American English
a member of any branch of a Protestant Christian denomination that developed from the evangelistic teachings and work of John and Charles Wesley, George Whitefield, and others in the early 18th cent.
of or characteristic of the Methodists or Methodism
adjective: of or pertaining to the Methodists or Methodism
noun: a member of the largest Christian denomination that grew out of the revival of religion led by John Wesley: stresses both personal and social morality and has an Arminian doctrine and, in the U.S., a modified episcopal polity

Methodist in British English
adjective: of or relating to Methodism or the Church embodying it (the Methodist Church)
noun: a member of any of the Nonconformist denominations that derive from the system of faith and practice initiated by John Wesley and his followers