fusion

American  

[fyoo-zhuhn] / ˈfju ʒən /

noun

• fusions
  plural

1. the act or process of fusing; the state of being fused.

2. that which is fused; the result of fusing.

   A ballet production is the fusion of many talents.

3. Politics.

   1. a coalition of parties or factions.

   2. (initial capital letter) the political party resulting from such a coalition.

4. Also called nuclear fusion.  Physics. a thermonuclear reaction in which nuclei of light atoms join to form nuclei of heavier atoms, as the combination of deuterium atoms to form helium atoms.

5. Ophthalmology

   1. Also called binocular fusion.  the correct blending of the images of both eyes.

   2. the perception of rapid, intermittent flashes of light as a continuous beam.

6. popular music that is a blend of two styles, especially a combining of jazz with either rock, classical music, or such ethnic elements as Brazilian or Japanese music.

7. Linguistics. the merging of linguistic elements, especially morphemes, usually accompanied by a change in the form of the elements.

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adjective

1. (of food or cooking) combining usually widely differing ethnic or regional ingredients, styles, or techniques.

   a restaurant serving French-Thai fusion cuisine; a fusion menu.

fusion British  

/ ˈfjuːʒən /

noun

1. the act or process of fusing or melting together; union

2. the state of being fused

3. something produced by fusing

4. See nuclear fusion

5. the merging of juxtaposed speech sounds, morphemes, or words

6. a coalition of political parties or other groups, esp to support common candidates at an election

7. a kind of popular music that is a blend of two or more styles, such as jazz and funk

8. psychol the processing by the mind of elements falling on the two eyes so that they yield a single percept

9. (modifier) relating to a style of cooking which combines traditional Western techniques and ingredients with those used in Eastern cuisine

   fusion cuisine

   fusion food

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fusion Scientific  

/ fyo̅o̅′zhən /

1. The joining together of atomic nuclei, especially hydrogen or other light nuclei, to form a heavier nucleus, especially a helium nucleus. Fusion occurs when plasmas are heated to extremely high temperatures, forcing the nuclei to collide at great speed. The resulting unstable nucleus emits one or more neutrons at very high speeds, releasing more energy than was required to fuse the nuclei, thereby making chain-reactions possible, since the reaction is exothermic. Fusion reactions are the source of the energy in the Sun and in other stars, and in hydrogen bombs.

2. See also fission

3. A mixture or blend formed by fusing two or more things.

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Other Word Forms

Derived Forms

• nonfusion
  noun
• fusional
  adjective

Inflected Forms

Nouns

• fusions
  plural

Etymology

Origin of fusion

First recorded in 1545–55; from Latin fūsiōn- (stem of fūsiō ) “a pouring out, melting”; see fuse ², -ion; fusion def. 4 was first recorded in 1945–50

Explanation

Fusion is the process of combining two or more things together into one. If your favorite genres are Westerns and reality dating shows, maybe when you become a TV executive, you'll create a fusion of the two, where competing dates have shoot-outs in saloons. The noun fusion comes from the Latin word fundere, meaning melt, so fusion is the act of melting things together. In science, fusion is the process of merging atoms together to create energy. Fusion is also used as an adjective. Fusion cuisine is the combination of at least two different ways of cooking. Fusion music is usually the combination of jazz and rock.

Example Sentences

See Examples For:

fusion fusions

While Mr. Mangione suffered chronic back pain and had spinal fusion surgery, it remains unclear why he believed the system failed him.

From The Wall Street Journal ● Aug. 16, 2026

Instead of being powered by the nuclear fusion that fuels ordinary stars, the object may consist of an extremely dense cloud of gas energized by a black hole at its center.

From Science Daily ● Aug. 13, 2026

"You can't be powering this by nuclear fusion, which is the energy source that sits at the heart of all the stars," Naidu explained.

From Barron's ● Aug. 12, 2026

My dad used to do fusion cooking before it was a thing.

From Los Angeles Times ● Aug. 7, 2026

We carry stores of DNA in our nuclei that may have come in, at one time or another, from the fusion of ancestral cells and the linking of ancestral organisms in symbiosis.

From "The Lives of a Cell" by Lewis Thomas

To win them over, Ritz-Carlton markets its ships as fusions between elevated hotels and luxury yachts.

From The Wall Street Journal ● Jan. 18, 2026

But it all started with “Buckingham Nicks,” the sweet, magical elixir that fueled one of rock’s most enduring fusions.

From Salon ● Sep. 19, 2025

When performing these fusions with his father, he says the exchange between themselves and the crowd is what makes them memorable.

From Los Angeles Times ● Sep. 20, 2024

They further uncovered rare groups of species that broke these genetic norms and underwent genetic rearrangements, including chromosome fusions -- where two chromosomes merge -- and fissions -- where a chromosome splits.

From Science Daily ● Feb. 21, 2024

It should not surprise us at all that some of the richest fusions of genres took place in the arena of American music.

From "The Story of Music" by Howard Goodall

Related Words

• amalgam
• blend
• blending
• synthesis