Late 18th century; earliest use found in William Enfield (1741–1797), Unitarian minister. From Islamite + -ic, perhaps originally after French (now rare) islamitique. In recent use after Dutch islamitisch. Compare German (now rare) islamitisch.
Definition of Islamitic in US English:
Islamitic
adjectiveˌɪzləˈmɪtɪk
rare
Muslim.
Origin
Late 18th century; earliest use found in William Enfield (1741–1797), Unitarian minister. From Islamite + -ic, perhaps originally after French (now rare) islamitique. In recent use after Dutch islamitisch. Compare German (now rare) islamitisch.