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View synonyms for

nuclear

[ noo-klee-er, nyoo-or, by metathesis, -kyuh-ler ]

adjective

  1. pertaining to or involving atomic weapons:

    nuclear war.

  2. operated or powered by atomic energy:

    a nuclear submarine.

  3. (of a nation or group of nations) having atomic weapons.
  4. of, relating to, or forming a nucleus.
  5. of, relating to, or like the nuclear family:

    nuclear bonds.



noun

Informal.
  1. switching to nuclear as a power source.

nuclear

/ ˈːɪə /

adjective

  1. of, concerned with, or involving the nucleus of an atom

    nuclear fission

  2. biology of, relating to, or contained within the nucleus of a cell

    a nuclear membrane

  3. of, relating to, forming, or resembling any other kind of nucleus
  4. of, concerned with, or operated by energy from fission or fusion of atomic nuclei

    a nuclear weapon

  5. involving, concerned with, or possessing nuclear weapons

    nuclear war

    a nuclear strike

“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

nuclear

  1. Relating to or forming a cell nucleus.
  2. Relating to atomic nuclei.
  3. Using energy derived from the nuclei of atoms through fission or fusion reactions.
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Pronunciation Note

In pronouncing nuclear, the second and third syllables are most commonly said as [-klee-er], a sequence of sounds that directly reflects the spelled sequence ·. In recent years, a somewhat controversial pronunciation has come to public attention, with these two final syllables said as [-ky, uh, -ler]. Since [-klee-er], the common pronunciation of ·, might also be represented, broadly, as [-kl, uh, -yer], the [-ky, uh, -ler] pronunciation can be seen as coming from a process of metathesis, in which the [l] and the [y] change places. The resulting pronunciation is reinforced by analogy with such words as molecular, particular, and muscular, and although it occurs with some frequency among highly educated speakers, including scientists, professors, and government officials, it is disapproved of by many.
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Other Word Forms

  • ·ٱ·Գ·· adjective
  • ܱ·پ·Գ·· adjective
  • Dz·Գ·· adjective
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Word History and Origins

Origin of nuclear1

1840–50; nucle(us) + -ar 1; compare French Գܳé
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Example Sentences

Examples have not been reviewed.

The site's eventual closure was sealed when hairline cracks were found in the graphite bricks which make up its nuclear cores.

From

The backdrop for all this high drama, adding yet another twist to this elaborate puzzle, is the administration’s ongoing Iran nuclear negotiations, which are led by Middle East special envoy Steve Witkoff.

From

While he admits he still hates the flavour of peanuts, he says knowing he can now eat something that once sent his body into "nuclear meltdown" has changed his life.

From

As part of this plan, the US might also take control of the controversial Zaporizhzhia nuclear power plant – currently in Russian hands – and feed the electricity to both parts of Ukrainian territory.

From

People living near a US airbase earmarked to house nuclear weapons say they are being left in the dark about what would happen in the event of a radiation alert.

From

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nucivorousnuclear bomb