Dictionary > English Dictionary > Definition, synonym and antonym of nuclear
Meaning of nuclear by Wiktionary Dictionary



    From nucleus +‎ -ar .


    • ( Canada ) IPA: /ˈnukliɚ/
    • ( UK ) IPA: /ˈnjuː.klɪə/
    • ( US ) IPA: /ˈnukliɚ/, /nukjəlɚ/

    Usage notes

    The second US pronunciation ( IPA: /nukjəlɚ/ ), famously used by George W. Bush, is considered incorrect by many .


    nuclear ( not comparable )

    1. ( biology ) Pertaining to the nucleus of a cell. [from 19th c.]
    2. Pertaining to a centre around which something is developed or organised; central, pivotal. [from 19th c.]
    3. Pertaining to the atomic nucleus. [from 20th c.]
    4. Involving atomic energy. [from 20th c.]
      a nuclear reactor
    5. Of a weapon: deriving its force from rapid release of atomic energy. [from 20th c.]
      a nuclear explosion

    Usage notes

    The pronunciation IPA: /nukjəlɚ/ is attested by Merriam-Webster ( Online 10th Edition ). See also nucular. However, this pronunciation is limited to the sense of atomic energy, and nuclear family is not pronounced nucular family.[1]

    Related terms

    See also

    1. ^ Geoffrey Nunberg, Going Nucular, 2002 .

    External links

    Nuclear on Wikipedia .


Explanation of nuclear by Wordnet Dictionary


    1. constituting or like a nucleus

    2. annexation of the suburban fringe by the nuclear metropolis
      the nuclear core of the congregation
    3. deriving destructive energy from the release of atomic energy

    4. nuclear war
      nuclear weapons
    5. of or relating to or constituting the nucleus of an atom

    6. nuclear physics
      nuclear fission
      nuclear forces
    7. of or relating to or constituting the nucleus of a cell

    8. nuclear membrane
      nuclear division

    Definition of nuclear by GCIDE Dictionary


    1. Nucleal Nuclear a.
      1. Of or pertaining to a nucleus; as, “the nuclear spindle ( see Illust. of Karyokinesis ) or the nuclear fibrils of a cell; the nuclear part of a comet, etc.”

    2. Nuclear a.
      1. of, pertaining to, or using nuclear weapons; “nuclear exchange, i.e. a reciprocal bombardment by nuclear weapons.”.

      2. Of, pertaining to, or powered by atomic energy; same as nuclear-powered; as, “a nuclear submarine; a nuclear power plant”.

      3. Of or pertaining to nations possessing nuclear weapons; as, “the nuclear club”.