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zwitterion noun

  /ˈtsvɪtəɹ.aɪən/ , /ˈtswɪtəɹ.aɪən/ , /ˈzwɪtəɹ.aɪən/
  • (chemistry) A molecule, such as an amino acid, that carries both a positive and a negative charge.
цви́ттер-ио́н
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