请输入您要查询的英文单词：

　

单词 ionium
释义

WordReference Random House Unabridged Dictionary of American English © 2024
i•o•ni•um  (ī ō′nē əm),USA pronunciation n. [Chem.]
  1. Chemistrya naturally occurring radioactive isotope of thorium. Symbol: Io;
    at. no.: 90;
    at. wt.: 230.
  • ion + -ium 1905–10

Collins Concise English Dictionary © HarperCollins Publishers::
ionium /aɪˈəʊnɪəm/ n
  1. obsolete a naturally occurring radioisotope of thorium with a mass number of 230
    Symbol: Io
Etymology: 20th Century: from New Latin, from ion + -ium
随便看

　

英语词典包含188688条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。

　

Copyright © 2004-2022 Newdu.com All Rights Reserved
更新时间：2024/11/13 13:42:05