Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Scrabble
  • Spanish Central
  • Learner's Dictionary

asthma

play
noun asth·ma \ˈaz-mə, British ˈas-\

Simple Definition of asthma

  • medical : a physical condition that makes it difficult for someone to breathe

Source: Merriam-Webster's Learner's Dictionary

Full Definition of asthma

  1. :  a chronic lung disorder that is marked by recurring episodes of airway obstruction (as from bronchospasm) manifested by labored breathing accompanied especially by wheezing and coughing and by a sense of constriction in the chest, and that is triggered by hyperreactivity to various stimuli (as allergens or rapid change in air temperature)

asthmatic

play \az-ˈma-tik, British as-\ adjective or noun

asthmatically

play \-ti-k(ə-)lē\ adverb

Origin and Etymology of asthma

Middle English asma, from Medieval Latin, modification of Greek asthma


First Known Use: 14th century

Rhymes with asthma


ASTHMA Defined for Kids

asthma

play
noun asth·ma \ˈaz-mə\

Definition of asthma for Students

  1. :  a lung disorder that causes periods of wheezing, coughing, and difficulty with breathing




Medical Dictionary

asthma

play
noun asth·ma \ˈaz-mə\

Medical Definition of asthma

  1. :  a chronic lung disorder that is marked by recurring episodes of airway obstruction (as from bronchospasm) manifested by labored breathing accompanied especially by wheezing and coughing and by a sense of constriction in the chest, and that is triggered by hyperreactivity to various stimuli (as allergens or rapid change in air temperature)





Seen and Heard

What made you want to look up asthma? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

of, relating to, or near a shore

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

lavender-fields-in-france

Which of these is a synonym of caesura?

megillah torrent interruption rebellion
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ