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单词 cation
释义

WordReference Random House Unabridged Dictionary of American English © 2024
cat•i•on  (katī′ən, -on),USA pronunciation n. [Physical Chem.]
  1. Chemistrya positively charged ion that is attracted to the cathode in electrolysis.
  2. Chemistryany positively charged atom or group of atoms (opposed to anion).
Also, kation. 
  • Greek katión going down (neuter of katió̄n, present participle of kateînai), equivalent. to kat-cat- + -i- go + -on neuter present participle suffix
  • 1825–35;
cat•i•on•ic  (kat′ī onik),USA pronunciation adj.  cat′i•oni•cal•ly, adv. 

Collins Concise English Dictionary © HarperCollins Publishers::
cation /ˈkætaɪən/ n
  1. a positively charged ion; an ion that is attracted to the cathode during electrolysis
    Compare anion
Etymology: 19th Century: from cata- + ion

cationic /ˌkætaɪˈɒnɪk/ adj
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