请输入您要查询的英文单词：

　

单词 penumbra
释义

penumbra

​noun countable
UK /pəˈnʌmbrə/
Word Forms
singularpenumbra
pluralpenumbras
DEFINITIONS1
  1. 1
    an area covered by the outer part of a shadow, so that it is not completely dark
    Synonyms and related words
    The outer parts of objects or spaces
    apex
    back
    back end

penumbra

​noun countable ​physics
US /pəˈnʌmbrə/
Word Forms
singularpenumbra
pluralpenumbras
DEFINITIONS1
  1. 1
    an area covered by the outer part of a shadow, so that it is not completely dark
    Synonyms and related words
    The outer parts of objects or spaces
    apex
    back
    back end
随便看

　

英语词典包含67175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：2025/11/8 2:26:00