fusion

Short definition from Wiktionary

Noun

1. 1
   The act of merging separate things, or the result thereof.
2. 2
   The act of merging separate things, or the result thereof: A nuclear reaction in which nuclei combine to form more massive nuclei with the concomitant release of energy.
3. 3
   The act of merging separate things, or the result thereof: A style of music that blends disparate genres; especially different types of jazz and reggae.
4. 4
   The act of merging separate things, or the result thereof: A style of cooking that combines ingredients and techniques from different countries or cultures
5. 5
   The act of merging separate things, or the result thereof: The act of melting or liquefying something by heating it.
6. 6
   The act of merging separate things, or the result thereof: The result of the hybridation of two genes which originally coded for separate proteins.
7. 7
   The act of merging separate things, or the result thereof: The process by which two distinct lipid bilayers merge their hydrophobic core, resulting in one interconnected structure.
8. 8
   The act of merging separate things, or the result thereof: The act of two characters merging into one, typically more powerful, being; or the merged being itself.

Verb

1. 1
   To combine; to fuse.