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nucleus

noun
🔊/ˈnjuːkliəs/
🔊/ˈnuːkliəs/
(plural nuclei
🔊/ˈnjuːkliaɪ/
🔊/ˈnuːkliaɪ/
)
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  1. (physics物理) the part of an atom that contains most of its mass and that carries a positive electric charge 核；原子核see also neutron, proton
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    Topics Physics and chemistryc1
  2. (biology生物) the central part of some cells, containing the genetic material细胞核Topics Biologyc1
  3. the central part of something around which other parts are located or collected核心；中心
    • These paintings will form the nucleus of a new collection.这些画将构成新的收藏系列的基础。🔊🔊
    4. Word Originearly 18th cent.: from Latin, literally ‘kernel, inner part’, diminutive of nux, nuc- ‘nut’.