The religion, or doctrines and precepts, of Mohammed, contained in the Koran; Islamism; Islam. The term Islam is preferred by most Moslems, and some find the term Mohammedanism to be offensive, as they worship Allah, not Mohammed.

the religion of Muslims collectively which governs their civilization and way of life; the predominant religion of northern Africa, the Middle East, Pakistan and Indonesia

the monotheistic religion of Muslims founded in Arabia in the 7th century and based on the teachings of Muhammad as laid down in the Koran; "the term Muhammadanism is offensive to Muslims who believe that Allah, not Muhammad, founded their religion"