fusion

From Wiktionary
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Pronunciation[change]

Noun[change]

Singular
fusion

Plural
fusions

  1. (uncountable) Fusion is when two or more things come together as one.
  2. (uncountable), (physics) In physics, nuclear fusion is when the nuclei of two or more atoms come together to make one new, heavier nucleus.
    Fusion reactions make a lot of energy.

Related words[change]