1. Liquefaction, as by melting by heat. 2. Union, as by joining together; e.g., bone f.. 3. The blending of slightly different images from each eye into a single perception. 4. The joining of two or more adjacent teeth during their development by a dentinal union. SEE ALSO: concrescence. 5. Joining of two genes, often neighboring genes. 6. The joining of two bones into a single unit, thereby obliterating motion between the two. 7. The process in which two membranes are joined together. [L. fusio, a pouring, fr. fundo, pp. fusus, to pour]
- bone block f. a method of fusing two bones in which a block of bone graft is placed between the two surfaces to obtain f. and correct preexisting deformity.
- cell f. the merging of the contents of two cells by artificial means without the destruction of either, resulting in a heterokaryon that, for at least a few generations, will reproduce its kind; an important method in assignment of loci to chromosomes.
- flicker f. critical flicker f. frequency.
- nuclear f. the formation of more complex atomic nuclei from less complex nuclei with release of energy, as in the formation of helium nuclei from hydrogen nuclei (hydrogen f.).
- spinal f., spine f. an operative procedure to accomplish bony ankylosis between two or more vertebrae. SYN: spondylosyndesis, vertebral f..
- splenogonadal f. the formation of a mass consisting of splenic and testicular or ovarian tissue.
- vertebral f. SYN: spinal f..

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fu·sion 'fyü-zhən n, often attrib
1 a) the act or process of liquefying or rendering plastic by heat
b) the liquid or plastic state induced by heat
2) a union by or as if by melting together: as
a) a merging of diverse elements into a unified whole specif 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
3) 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 adj

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the joining together of two structures. For example, the surgical fusion of two or more vertebra is performed to stabilize an unstable spine. Fusion of the epiphysis during growth is the cause of arrested growth of stature.

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fu·sion (fuґzhən) [L. fusio] 1. the act, process, or result of melting. 2. merging or coherence of adjacent parts or bodies. 3. coordination of separate images of the same object in the two eyes into one. 4. operative formation of an ankylosis or arthrodesis; called also f. of joint.

Medical dictionary. 2011.

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  • 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 Collaborative International Dictionary of English

  • fusión — f. fís. Cambio del estado sólido al líquido por acción del calor. ⊆ anat. patol. Unión anormal de estructuras colindantes. Medical Dictionary. 2011. fusión …   Diccionario médico

  • fusión — sustantivo femenino 1. Unión de dos o más cosas: Los dos líderes están de acuerdo en iniciar el proceso de fusión de los partidos. Sinónimo: unificación. 2. Área: física Cambio de estado de un sólido a líquido: la fusión del hielo, la fusión de… …   Diccionario Salamanca de la Lengua Española

  • Fusion-io — ist ein Unternehmen mit Hauptsitz in Cottonwood Heights, im US amerikanischen Bundesstaat Utah sowie einer Niederlassung in „Silicon Valley“, San Jose, Kalifornien (USA). Das Unternehmen entwickelt und baut Speicher zur Applikationsbeschleunigung …   Deutsch Wikipedia

  • Fusion — Sf Verschmelzung, Zusammenschluß erw. fremd. Erkennbar fremd (19. Jh.) Entlehnung. Entlehnt aus l. fūsio ( ōnis) das Gießen, das Schmelzen , einem Abstraktum von l. fundere gießen . Zunächst in der konkreten Bedeutung des (Ver )Schmelzens… …   Etymologisches Wörterbuch der deutschen sprache

  • fusión — (Del lat. fusĭo, ōnis). 1. f. Acción y efecto de fundir o fundirse. 2. Unión de intereses, ideas o partidos. 3. Econ. Integración de varias empresas en una sola entidad, que suele estar legalmente regulada para evitar excesivas concentraciones de …   Diccionario de la lengua española

  • fusion — [fyo͞o′zhən] n. [L fusio] 1. a fusing or melting together 2. a) the union of different things by or as if by melting; blending; coalition [a fusion of political parties] b) the state or fact of being so united 3. anything made by fusing …   English World dictionary

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