Lewis & Short

permixtĭo (permistĭo), ōnis, f. [permisceo].

  1. I. A mixing together; concr., ingredients mixed together, a mixture, Cic. Univ. 12, 37.
    1. B. In partic., a mixture, Pall. 11, 20.
  2. II. A confusion, disturbance: rei publicae permixtio, Aur. Vict. Caes. 41: dissensio civilis, quasi permixtio terrae, Sall. J. 41 fin.