apotactite

from The Century Dictionary.

• noun One of a community of ancient Christians who, in imitation of the recorded acts of certain of the first followers of Christ, added to the ascetic vows of the Encratites, of whom they were a branch, a renunciation of all personal property: probably the same as the early Apostolics. See Apostolic, n., 1 .

from the GNU version of the Collaborative International Dictionary of English.

• noun (Eccl. Hist.) One of a sect of ancient Christians, who, in supposed imitation of the first believers, renounced all their possessions.