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nuclear Line breaks: nu|clear
Pronunciation: /ˈnjuːklɪə/

Definition of nuclear in English:


1Relating to the nucleus of an atom: nuclear chemistry
More example sentences
  • He was thus in between the primordial hydrogen hypothesis of William Prout and the nuclear atoms of Ernest Rutherford.
  • This technique is one of the most important uses of nuclear chemistry for archeologists.
  • The trouble was that Glenn Seaborg was still alive, though no longer really active in nuclear chemistry.
1.1Denoting, relating to, or powered by the energy released in nuclear fission or fusion: nuclear submarines
More example sentences
  • The result might be a chain reaction: a self-sustaining release of nuclear energy.
  • To generate electricity, we use hydroelectric power, coal and nuclear energy.
  • At first, the program focused mainly on the use of nuclear energy for power generation.
1.2Denoting, possessing, or involving weapons using nuclear energy: nuclear warheads a nuclear attack
More example sentences
  • Our fears about a nuclear strike traditionally include the horrific death toll, the living envying the dead, etc.
  • At the time, it seemed a large nuclear strike would disrupt communications networks to the point that command and control services would collapse.
  • We'll look at whether this country is doing enough and spending enough to prepare for a nuclear attack.
2 Biology Relating to the nucleus of a cell: nuclear DNA
More example sentences
  • The lining cells showed no significant nuclear pleomorphism or mitotic activity.
  • Centrosomes also mediate nuclear migrations in a variety of cells and organisms.
  • As nuclear condensation occurs, these nuclei align at the apical end of the cyst.


Mid 19th century: from nucleus + -ar1.

Words that rhyme with nuclear

sub-nuclear, thermonuclear

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