The Collaborative International Dictionary of English v.0.48:

Sublevation \Sub`le*va"tion\, n. [L. sublevare to lift up; sub
   under + levare to lift, raise: cf. L. sublevatio an
   allevation.]
   1. The act of raising on high; elevation. --Sir T. More.
      [1913 Webster]

   2. An uprising; an insurrection. [R.] --Sir W. Temple.
      [1913 Webster]