The Collaborative International Dictionary of English v.0.48:

Apotactite \Ap`o*tac"tite\, n. [LL. pl. apotactitae, Gr. ?, fr.
   ? set apart; ? from + ? to arrange, ordain.] (Eccl. Hist.)
   One of a sect of ancient Christians, who, in supposed
   imitation of the first believers, renounced all their
   possessions.
   [1913 Webster]