MOHAMMEDANISM
Islam, Islamism, Mohammedanism, Muhammadanism, Muslimism
(noun) the monotheistic religious system of Muslims founded in Arabia in the 7th century and based on the teachings of Muhammad as laid down in the Koran; “Islam is a complete way of life, not a Sunday religion”; “the term Muhammadanism is offensive to Muslims who believe that Allah, not Muhammad, founded their religion”
Source: WordNet® 3.1
Mo*ham"med*an*ism, Mo*ham"med*ism, n.
Definition: The religion, or doctrines and precepts, of Mohammed, contained
in the Koran; Islamism.
Source: Webster’s Unabridged Dictionary 1913 Edition