ismaili/ˌɪsmʌɪˈiːli/EtymologyFrom Arabic إِسْمَاعِيلِيّ (ʔismāʕīliyy).adjOf or pertaining to Shi'ism or Ismailism.nameA branch of Shi'ism, which follows a living Imam descended from Muhammad.nounA follower of Ismailism.