Islam

noun

1. the civilization of Muslims collectively which is governed by the Muslim religion

   noun.group

   Examples

   Islam is predominant in northern Africa, the Middle East, Pakistan, and Indonesia.

   Synonyms muslimism

   Source: WordNet 3.0

2. 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

   noun.cognition

   Examples

   Islam is a complete way of life, not a Sunday religion.

   Synonyms islamism mohammedanism muhammadanism muslimism

   Source: WordNet 3.0

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

   noun

   Source: webster1913