noun
Refers to a follower of Islam. Neutral term used in everyday contexts.
彼はイスラム教徒で、毎日五回お祈りをします。
He is a Muslim and prays five times a day.
イスラム教 is the religion Islam, while イスラム教徒 refers to a person who follows that religion.
Compound of イスラム (Islam) and 教徒 (follower of a religion).