The Collaborative International Dictionary of English v.0.48:

Incomplete \In`com*plete"\, a. [L. incompletus: cf. F.
   incomplet. See In- not, and Complete.]
   [1913 Webster]
   1. Not complete; not filled up; not finished; not having all
      its parts, or not having them all adjusted; imperfect;
      defective.
      [1913 Webster]

            A most imperfect and incomplete divine. --Milton.
      [1913 Webster]

   2. (Bot.) Wanting any of the usual floral organs; -- said of
      a flower.
      [1913 Webster]

   Incomplete equation (Alg.), an equation some of whose terms
      are wanting; or one in which the coefficient of some one
      or more of the powers of the unknown quantity is equal to
      0.
      [1913 Webster]

WordNet (r) 3.0 (2006):

incomplete
    adj 1: not complete or total; not completed; "an incomplete
           account of his life"; "political consequences of
           incomplete military success"; "an incomplete forward
           pass" [syn: incomplete, uncomplete] [ant: complete]
    2: not yet finished; "his thesis is still incomplete"; "an
       uncompleted play" [syn: incomplete, uncompleted]