Medical Dictionary


noun, often attrib fu·sion \ˈfyü-zhən\

Medical Definition of FUSION

a :  the act or process of liquefying or rendering plastic by heat b :  the liquid or plastic state induced by heat
:  a union by or as if by melting together: as a :  a merging of diverse elements into a unified whole; specifically :  the blending of retinal images in binocular vision b :  a combination of ingredients achieved by heating and mixing together c (1) :  a blend of sensations, perceptions, ideas, or attitudes such that the component elements can seldom be identified by introspective analysis (2) :  the perception of light from a source that is intermittent above a critical frequency as if the source were continuous—called also flicker fusion; compare flicker d :  the surgical immobilization of a joint—see spinal fusion
:  the union of atomic nuclei to form heavier nuclei resulting in the release of enormous quantities of energy when certain light elements unite—called also nuclear fusion
fu·sion·al \-əl\ adjective
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