- the religious faith of Muslims, based on the words and religious system founded by the prophet Muhammad and taught by the Quran, the basic principle of which is absolute submission to a unique and personal god, Allah.
- the whole body of Muslim believers, their civilization, and the countries in which theirs is the dominant religion.
- the religion of Muslims, having the Koran as its sacred scripture and teaching that there is only one God and that Mohammed is his prophet; Mohammedanism
- Muslims collectively and their civilization
- the countries where the Muslim religion is predominant
