fusion

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun The act or procedure of liquefying or melting by the application of heat.
• noun The liquid or melted state induced by heat.
• noun The merging of different elements into a union.
• noun A union resulting from fusing.
• noun Physics A nuclear reaction in which atomic nuclei combine to form more massive nuclei with the simultaneous release of energy.
• noun Music that blends jazz elements and the heavy repetitive rhythms of rock.
• noun A style of cooking that combines ingredients and techniques from very different cultures or countries.

from The Century Dictionary.

• noun In modern psychology: A mode of intimate connection of elementary mental processes, such that the connected elements are difficult of analysis, and the resulting complex approximates the simplicity of impression characteristic of the element itself.
• noun The product of this connection; the blend or fused complex.
• noun The perception set up by the concurrence of a number of simple tonal stimuli. See fusion, 6.
• noun The act or operation of melting or rendering fluid by heat, without the aid of a solvent: as, the fusion of ice or of metals.
• noun The state of being melted or dissolved by heat; a state of fluidity or flowing in consequence of heat: as, metals in fusion.
• noun Hence The act of uniting or blending together, or the state of being united or blended, as if through melting; complete union, as of previously diverse elements or individuals.
• noun Specifically In politics, the coalition of two parties or factions.
• noun Abundance; plenty; profusion: same as foison.

from the GNU version of the Collaborative International Dictionary of English.

• noun The act or operation of melting or rendering fluid by heat; the act of melting together.
• noun The state of being melted or dissolved by heat; a state of fluidity or flowing in consequence of heat.
• noun The union or blending together of things, .
• noun (Chem.) the melting of certain crystals by heat in their own water of crystallization.
• noun (Biol.) The union, or binding together, of adjacent parts or tissues.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun The merging of similar or different elements into a union
• noun physics A nuclear reaction in which nuclei combine to form more massive nuclei with the concomitant release of energy
• noun music a style of music that blends disparate genres; especially types of jazz
• noun A style of cooking that combines ingredients and techniques from different countries or cultures
• noun The act of melting or liquifying something by heating it

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun the combining of images from the two eyes to form a single visual percept
• noun the act of fusing (or melting) together
• noun the merging of adjacent sounds or syllables or words
• noun a nuclear reaction in which nuclei combine to form more massive nuclei with the simultaneous release of energy
• noun an occurrence that involves the production of a union
• noun the state of being combined into one body
• noun correction of an unstable part of the spine by joining two or more vertebrae; usually done surgically but sometimes done by traction or immobilization