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 ] | 
