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单词 nucleotide
释义

WordReference Random House Unabridged Dictionary of American English © 2024
nu•cle•o•tide  (no̅o̅′klē ə tīd′, nyo̅o̅′-),USA pronunciation n. [Biochem.]
  1. Biochemistry, Geneticsany of a group of molecules that, when linked together, form the building blocks of DNA or RNA: composed of a phosphate group, the bases adenine, cytosine, guanine, and thymine, and a pentose sugar, in RNA the thymine base being replaced by uracil.
  • alteration of nucleoside 1905–10

Collins Concise English Dictionary © HarperCollins Publishers::
nucleotide /ˈnjuːklɪəˌtaɪd/ n
  1. a compound consisting of a nucleoside linked to phosphoric acid. Nucleic acids are made up of long chains (polynucleotides) of such compounds
Etymology: 20th Century: from nucleo- + t (added for ease of pronunciation) + -ide
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