请输入您要查询的英文单词：

　

单词 asthma
释义

WordReference Random House Learner's Dictionary of American English © 2024
asth•ma /ˈæzmə, ˈæs-/USA pronunciation   n. [uncountable]
  1. Pathologya breathing disorder often caused by an allergic reaction and characterized by spasms in the lungs, wheezing, and difficulty in breathing out.

WordReference Random House Unabridged Dictionary of American English © 2024
asth•ma  (az′mə, as′-),USA pronunciation n. 
  1. Pathologya paroxysmal, often allergic disorder of respiration, characterized by bronchospasm, wheezing, and difficulty in expiration, often accompanied by coughing and a feeling of constriction in the chest. Also called bronchial asthma. 
  • Greek ásthma
  • Medieval Latin
  • Greek: a panting (akin to aázein to breathe hard); replacing Middle English asma
  • Middle English 1350–1400

Collins Concise English Dictionary © HarperCollins Publishers::
asthma /ˈæsmə/ n
  1. a respiratory disorder, often of allergic origin, characterized by difficulty in breathing, wheezing, and a sense of constriction in the chest
Etymology: 14th Century: from Greek: laborious breathing, from azein to breathe hard
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：2025/7/31 8:20:39