网站首页  词典首页

请输入您要查询的词汇:

 

词汇 prereduction
释义

Definition of prereduction in English:

prereduction

noun ˌpriːrɪˈdʌkʃn
  • 1The halving of the chromosome number by the separation of homologous chromosomes at the first of the two divisions of meiosis.

  • 2Separation of the different alleles at a particular heterozygous locus in the first division of meiosis.

  • 3Prior chemical reduction.

Origin

Early 20th century; earliest use found in Proceedings of the Academy of Natural Sciences of Philadelphia. From pre- + reduction, after German Praereduction (E. Korschelt & K. Heider Lehrb. der vergleichenden Entwicklungsgeschichte der wirbellosen Thiere (Allgemeiner Theil) II. vi. 586).

Definition of prereduction in US English:

prereduction

nounˌpriːrɪˈdʌkʃn
  • 1The halving of the chromosome number by the separation of homologous chromosomes at the first of the two divisions of meiosis.

  • 2Separation of the different alleles at a particular heterozygous locus in the first division of meiosis.

  • 3Prior chemical reduction.

Origin

Early 20th century; earliest use found in Proceedings of the Academy of Natural Sciences of Philadelphia. From pre- + reduction, after German Praereduction (E. Korschelt& K. Heider Lehrb. der vergleichenden Entwicklungsgeschichte der wirbellosen Thiere (Allgemeiner Theil) II. vi. 586).

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:2025/1/14 17:19:26