网站首页  词典首页

请输入您要查询的词汇:

 

词汇 protogenic
释义

Definition of protogenic in English:

protogenic

adjective ˌprəʊtə(ʊ)ˈdʒɛnɪk
  • Original, primary; of or belonging to the first or earliest stage.

adjective ˌprəʊtə(ʊ)ˈdʒɛnɪk
Chemistry
  • Of a substance, molecular species, etc.: able to supply a hydrogen atom for protonation; proton-donating; = protic. Opposed to protophilic.

Origin

Mid 19th century; earliest use found in George Edward Day (1815–1872), physician. Irregularly from ancient Greek πρωτογενής first-born, primeval + -ic
1930s; earliest use found in Journal of the American Chemical Society. From proto- + -genic. Compare German protogen, adjective.

Definition of protogenic in US English:

protogenic

adjectiveˌprəʊtə(ʊ)ˈdʒɛnɪk
  • Original, primary; of or belonging to the first or earliest stage.

adjectiveˌprəʊtə(ʊ)ˈdʒɛnɪk
Chemistry
  • Of a substance, molecular species, etc.: able to supply a hydrogen atom for protonation; proton-donating; = protic. Opposed to protophilic.

Origin

Mid 19th century; earliest use found in George Edward Day (1815–1872), physician. Irregularly from ancient Greek πρωτογενής first-born, primeval + -ic<br>1930s; earliest use found in Journal of the American Chemical Society. From proto- + -genic. Compare German protogen, adjective.

随便看

 

春雷网英语在线翻译词典收录了464360条英语词汇在线翻译词条,基本涵盖了全部常用英语词汇的中英文双语翻译及用法,是英语学习的有利工具。

 

Copyright © 2000-2024 Sndmkt.com All Rights Reserved 更新时间:2024/12/28 1:59:58