Source : Webster's Revised Unabridged Dictionary (1913)

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

            A most imperfect and incomplete divine. --Milton.

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

   {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.

Source : WordNet®

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:
            {uncomplete}] [ant: {complete}]
     2: lacking one or more of the four whorls of the complete
        flower--sepals or petals or stamens or pistils; "an
        incomplete flower" [ant: {complete}, {complete}]
     3: not yet finished; "his thesis is still incomplete"; "an
        uncompleted play" [syn: {uncompleted}]