What is "sevener"

n. the cardinal number that is the sum of six and one [syn: seven, 7, VII, heptad, septet]

Seveners are a branch of Ismā'īlī Shīʻa. They became known as "Seveners" because they believe that Isma'il ibn Jafar was the seventh and the last Imam (hereditary leader of the Muslim community in the direct line of Ali). They believed his son, Muhammad ibn Isma'il, would return and bring about an age of justice as Mahdi. Their most famous and active branch were the Qarmatians.