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单词 substituent
释义

WordReference Random House Unabridged Dictionary of American English © 2024
sub•stit•u•ent  (sub stich′o̅o̅ ənt),USA pronunciation n. 
  1. Chemistryan atom or atomic group that takes the place of another atom or group present in the molecule of the original compound.

adj. 
  1. having been or capable of being substituted.
  • Latin substituent- (stem of substituēns), present participle of substituere to substitute, equivalent. to sub- sub- + -stitu-, combining form of statuere to set up, erect (see statue) + -ent- -ent
  • 1890–95

Collins Concise English Dictionary © HarperCollins Publishers::
substituent /sʌbˈstɪtjʊənt/ n
  1. an atom or group that replaces another atom or group in a molecule or can be regarded as replacing an atom in a parent compound
 adj
  1. substituted or substitutable
Etymology: 19th Century: from Latin substituere to substitute
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更新时间：2024/11/10 8:24:54