ISLAM

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”

Islam, Muslimism

(noun) the civilization of Muslims collectively which is governed by the Muslim religion; “Islam is predominant in northern Africa, the Middle East, Pakistan, and Indonesia”

Source: WordNet® 3.1

Is"lam, n. Etym: [Ar. islam obedience to the will of God, submission, humbling one's self, resigning one's self to the divine disposal. Cf. Moslem.]

1. The religion of the Mohammedans; Mohammedanism; Islamism. Their formula of faith is: There is no God but Allah, and Mohammed is his prophet.

2. The whole body of Mohammedans, or the countries which they occupy.

Source: Webster’s Unabridged Dictionary 1913 Edition