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in physics. 1 The change of a substance from the solid to the liquid state, also known as melting. The heat given up by a unit mass of a substance during fusion is called the latent heatlatent heat,
heat change associated with a change of state or phase (see states of matter). Latent heat, also called heat of transformation, is the heat given up or absorbed by a unit mass of a substance as it changes from a solid to a liquid, from a liquid to a gas, or the
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 of fusion. See also melting pointmelting point,
temperature at which a substance changes its state from solid to liquid. Under standard atmospheric pressure different pure crystalline solids will each melt at a different specific temperature; thus melting point is a characteristic of a substance and can be used
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. 2 The combining of two light atomic nuclei to form a single heavier nucleusnucleus,
in physics, the extremely dense central core of an atom. The Nature of the Nucleus

Atomic nuclei are composed of two types of particles, protons and neutrons, which are collectively known as nucleons.
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, with the release of energy. See nuclear energynuclear energy,
the energy stored in the nucleus of an atom and released through fission, fusion, or radioactivity. In these processes a small amount of mass is converted to energy according to the relationship E = mc2, where E is energy, m
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; hydrogen bombhydrogen bomb
or H-bomb,
weapon deriving a large portion of its energy from the nuclear fusion of hydrogen isotopes. In an atomic bomb, uranium or plutonium is split into lighter elements that together weigh less than the original atoms, the remainder of the mass
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; cold fusioncold fusion
or low-temperature fusion,
nuclear fusion of deuterium, an isotope of hydrogen, at or relatively near room temperature. Fusion, the reaction involved in the release of the destructive energy of a hydrogen bomb, requires extremely high temperatures, and
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(fyoo -zhŏn) See nuclear fusion.



in linguistics, a means of combining a stem with an affix, in which the nature of the stem is determined by the nature of the affix, or vice versa. Fusion is distinct from agglutination, which lacks such a dependence. Since the degree of dependence can vary, one may speak of the degree of fusion, which is inversely proportional to the degree of agglutination.

Fusion is said to be minimal when the affix determines only the class of the stem; for example, the Russian suffix -ost’ (“-ness”) requires an adjectival stem. Fusion is termed maximal when the combination of stem and affix influences the selection of a particular morph for the stem or for the affix, in both inflection and word formation. In inflection, compare Russian vid-ish’ (“you see,” sing.) with vizh-u (“I see”) and id-esh’ (“you are going,” sing.); compare Greek π∈πoμφ-α (“I sent,” perf.) with π∈μπ-ω (“I send”). In word formation, compare English “depth” and “deep.” The term “fusion” is often used only to designate the latter phenomenon, that is, maximal fusion. Languages in which inflected forms are formed by means of fusion are called fusional languages.


(nuclear physics)
Combination of two light nuclei to form a heavier nucleus (and perhaps other reaction products) with release of some binding energy. Also known as atomic fusion; nuclear fusion.
(physical chemistry)
A change of the state of a substance from the solid phase to the liquid phase. Also known as melting.


In welding, the melting together of filler metal and base metal, or of the base metal alone, which results in coalescence.


2. a coalition of political parties or other groups, esp to support common candidates at an election
3. Psychol the processing by the mind of elements falling on the two eyes so that they yield a single percept


Software package supplied by Network Research Corporation claiming to connect various different configurations of LAN.


A program transformation where a composition of two functions is replaced by in-lining them and combining their bodies. E.g.

f x = g (h x) ==> f x = g (2 * x) g x = x + 1 f x = 2 * x + 1 h x = 2 * x

This has the beneficial effect of reducing the number of function calls. It can be especially useful where the intermediate result is a large data structure which can be eliminated.

See also vertical loop combination.


The following "Fusion" products are in this encyclopedia:
Product         Type of Software VMware Fusion      Mac Virtual Machine

   ColdFusion         Web authoring

   NetObjects Fusion  Web authoring

   FOCUS Fusion       OLAP database

  Product         Type of Hardware AMD Fusion         CPU + GPU chip

   Fusion Drive       Mac HD/SSD drive

   Apple A series     Apple A10 processor
References in periodicals archive ?
The available literature on the relationship between mother and daughter affected by an ED is convergent in proposing the hypothesis of a standard fusional type of interaction, which would involve the experience of ambivalent and conflictual emotions.
2 Fusional computation of data, knowledge and model based on knowledge unit network reasoning
Asi, tal como veiamos que el baile matinal daba como paradojico resultado un danzante solitario, completamente aislado y ciego a los demas bailarines, incapaz de comunicarse con ellos mas que a traves de una trascendencia que fundara una comunidad fusional, quizas podamos aventurar que el resultado tambien paradojico del nuevo baile sea una compania, una conciencia de/con los demas, basada no en su semejanza con nosotros, sino que en su diferencia insuperable.
The replacement of PaoXi by ShenNong is a very important precondition for the later fusional foundation of the Yan-Huang Chinese nation.
Lily es, por lo demas (siempre el sustrato real), una bailarina sensual y espontanea, con las cualidades necesarias para personificar al cisne negro, y llama la atencion de Thomas, lo mas cercano en su vida actual a un objeto que pueda interponerse en la relacion fusional con su madre.
35) Se esta perda ou falta e constitutiva da comunidade, entao todo projeto de comunhao, de comum uniao de todos numa unidade purificada e integrada acaba por resultar no exterminio da pluralidade e da singularidade, prontamente dissolvidas no projeto de uma comunidade fusional organizada em torno a partilha de propriedades comuns.
Nancy senala que la comunidad se estructura "alrededor de la muerte de sus miembros, es decir alrededor de la 'perdida' (de la imposibilidad) de su inmanencia, y no alrededor de su asuncion fusional en una hipostasis colectiva" (2001: 33.
From the typological point of view, the Zamucoan languages are fusional and present an SVO basic word-order.
el nosotros fusional, el reagrupamiento al cual uno se adhiere por la ideologia o por necesidad de proteccion".
Fusional democracy prevails in times of turmoil, when irrational and emotional crowds may feel united by the feverish expectation of a radically new order of society in which all will be like gods.
Approach to God can only be ethical, can only be "outside of any mysticism," (9) for mysticism is a by-product of autoaffection, natural benevolence, divine instinct, and fusional longing.