ACCEMETY, (dKaporros, sleepless), an order of monks instituted by Alexander, a Syrian, about the middle of the 5th century. Founding on the precept, Pray without ceasing, they celebrated divine service uninterruptedly night and day, for which purpose they divided themselves into three sections, that relieved each other in turn. The chief seat of the Accemetm was the cloister Stadium at Constantinople, whence they were sometimes called Studites. Having adopted the monophysito heresy, they were put under the Papal ban about the year 536.