1. 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
   "Mohammedanism is a complete way of life, not a Sunday religion";
   - Islam, Islamism, Muhammadanism [archaic], Muslimism

Type of: faith, monotheism, organised religion [Brit], organized religion, religion

Encyclopedia: Mohammedanism