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Definitions of Muhammadanism:
noun: 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
Example: "The term Muhammadanism is offensive to Muslims who believe that Allah, not Muhammad, founded their religion"
noun: 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