Allah/ˈælə,ˈɑːlə,ɑːˈlɑː/ Definition 1 of 2Pro Tip 1/3Religious Significance Allah represents the one monotheistic God in Islam, central to the faith. In Islam, worship is directed solely to Allah. Pro Tip 2/3Not Interchangeable 'Allah' specifically refers to God in Islam, not any god or gods in general. While Christians call God 'Lord', Muslims use 'Allah'. Pro Tip 3/3Capitalization Always capitalize 'Allah' as it is a proper noun, denoting respect. Muslims pray to Allah five times a day.