• WordNet 3.6
    • n Ismailian an adherent of Ismailism; a member of the Ismaili branch of Shiism
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Century Dictionary and Cyclopedia
    • n Ismailian A member of a sect of Shiite Mohammedans who maintained that Ismail was the seventh and last of the true imams, and that their chief was his vicegerent on earth. Their doctrines, like those of their existing representatives, the Druses and Ansars of Syria, departed widely from orthodox Mohammedanism, and were made known in detail only to the initiated. The Ismailians founded the Fatimite dynasty of Egypt and Syria (see Fatimite), and the sect of Assassins was an offshoot from them.
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Chambers's Twentieth Century Dictionary
    • n Ismailian is-mā-il′i-an one of a sect of Shiite Mohammedans, who claim that Ismail (c. 770) was the seventh and last of the Imâms
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In literature:

There were Abyssinian Christians, Llamas from Thibet, Ismailians and Fireworshippers.
"What Men Live By and Other Tales" by Leo Tolstoy
He also received a commission from the Caliph to refute the doctrine of the Ismailians.
"Mystics and Saints of Islam" by Claud Field