nucleotide
noun [ C ] chemistry, biology specialized uk/ˈnjuːkli.ə.taɪd/ us/ˈnuː.kli.oʊ/
核苷酸（核酸中的一类化合物，例如 DNA 和 RNA）
one of a group of chemical compounds found in living cells in nucleic acids such as DNA and RNA
Compare: base noun (IN CHEMISTRY)