Islam

American  

[is-lahm, iz-, is-luhm, iz-] / ɪsˈlɑm, ɪz-, ˈɪs ləm, ˈɪz- /

noun

1. 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.

2. the whole body of Muslim believers, their civilization, and the countries in which theirs is the dominant religion.

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Islam British  

/ ˈɪzlɑːm /

noun

1. 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

2. 1. Muslims collectively and their civilization

   2. the countries where the Muslim religion is predominant

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Islam Cultural  

1. A religion, founded by Muhammad, whose members worship the one God of Jews (see also Jews) and Christians (see also Christian)(God is called Allah in Arabic) and follow the teachings of the Koran. Islam means “submission to the will of God”; adherents of Islam are called Muslims. The fundamental belief of Islam is “There is only one God, and Muhammad is his prophet.” Muslims are obliged to pray five times a day, to fast in the daytime during the holy month of Ramadan, to abstain from pork and alcohol, and to make gifts to the poor. All of them are expected to make a pilgrimage to Mecca (see also Mecca), Muhammad's birthplace, at least once in their lives.

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Shi'ite and Sunni Muslims make up the two main branches of Islam.

Islam is the dominant faith in Arab nations, a number of countries of central Asia, and Malaysia and Indonesia.

Other Word Forms

• Islamic adjective
• Islamitic adjective
• non-Islamic adjective
• non-Islamitic adjective

Etymology

Origin of Islam

First recorded in 1610–20; from Ottoman Turkish islām, from Arabic islām “submission (to God),” from aslama “to surrender, resign oneself, submit oneself (to God's will),” from the Semitic root šlm “to be whole, sound”; akin to Arabic salām and Hebrew shālōm “peace,” from the Semitic noun šalām

Compare meaning

How does islam compare to similar and commonly confused words? Explore the most common comparisons:

• Muslim vs. Islam
• Nation of Islam vs. Islam

Example Sentences

Shia Islam is Iran's state religion, and also a major religious branch in Bahrain, alongside Sunni Islam.

From Barron's • Mar. 28, 2026

The Druze are a community in Syria, Lebanon, Israel and the Israeli-occupied Golan Heights, whose religion is an offshoot of Shia Islam with its own unique identity and beliefs.

From BBC • Mar. 20, 2026

“He is a ghost leader, like the Hidden Iman,” Golkar said, referring to a messianic figure in Shia Islam.

From The Wall Street Journal • Mar. 12, 2026

At the Islam Qala crossing point in Herat province, western Afghanistan, Talibshah, who did not to give his family name, said he had been working in agriculture northwest of Tehran.

From Barron's • Mar. 11, 2026

It was signed Fedayeen of Islam—devotees of Islam.

From "Malala: The Girl Who Stood Up for Education and Changed the World" by Malala Yousafzai