[1] : The Collaborative International Dictionary of English v.0.48

fusion \fu"sion\, n. l. fusio, fr. fundere, fusum to pour,
   melt: cf. f. fusion. see fuse, v. t., aud cf, foison.
   1. the act or operation of melting or rendering fluid by
      heat; the act of melting together; as, the fusion of
      metals.
      1913 webster

   2. the state of being melted or dissolved by heat; a state of
      fluidity or flowing in consequence of heat; as, metals in
      fusion.
      1913 webster

   3. the union or blending together of things, as, melted
      together.
      1913 webster

            the universal fusion of races, languages, and
            customs . . .
            had produced a corresponding fusion of creeds. --c.
                                                  kingsley.
      1913 webster

   watery fusion chem. the melting of certain crystals by
      heat in their own water of crystallization.
      1913 webster

   4. biol. the union, or binding together, of adjacent parts
      or tissues.
      1913 webster
see also:
fuse foison watery fusion 

Watery >> W Words
Watery, definition of term: Watery
watery_pag1.html

Fusion >> F Words
Fusion, definition of term: Fusion
fusion_pag1.html

Nuclear Fusion >> N Words
Nuclear Fusion, definition of term: Nuclear Fusion
nuclear+fusion_pag1.html

Heat Of Fusion >> H Words
Heat Of Fusion, definition of term: Heat Of Fusion
heat+of+fusion_pag1.html