The Collaborative International Dictionary of English v.0.48:

Fondu \Fon`du"\ (f[o^]n"d[.u]"), a. [F. fondu, p.p. of fondre to
   melt, blend. See Found to cast.]
   1. Blended; gradually changing or passing into each other by
      subtle gradations; -- said of colors or of the surface or
      material on which the colors are laid.

   2. Melted. [Also spelled fondue.]
      [PJC] Fondue

The Collaborative International Dictionary of English v.0.48:

Fondue \Fon`due"\, n. [Also erroneously Fon`du".] [F. See
   Fondu; cf. Fondant.]
   1. (Cookery) A dish made of cheese, eggs, butter, etc., often
      seasoned with kirsch and white wine, melted together, and
      usually used as a dip for pieces of bread.
      [Webster 1913 Suppl.]

   2. (Cookery) A dish consisting of pieces of solid food cooked
      in or dipped into a hot sauce; as, beef fondue.
      [PJC]

The Collaborative International Dictionary of English v.0.48:

fondue \fon`due"\ (f[o^]n"d[.u]"), a. [F. fondu, p.p. of fondre
   to melt, blend. See Found to cast.]
   Melted. [Also spelled fondu.]
   [PJC]

WordNet (r) 3.0 (2006):

fondu
    n 1: cubes of meat or seafood cooked in hot oil and then dipped
         in any of various sauces [syn: fondue, fondu]
    2: hot cheese or chocolate melted to the consistency of a sauce
       into which bread or fruits are dipped [syn: fondue,
       fondu]