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

hyperventilation

play
noun hy·per·ven·ti·la·tion \-ˌven-tə-ˈlā-shən\

Definition of hyperventilation

  1. :  excessive rate and depth of respiration leading to abnormal loss of carbon dioxide from the blood




Medical Dictionary

hyperventilation

play
noun hy·per·ven·ti·la·tion \-ˌvent-əl-ˈā-shən\

Medical Definition of hyperventilation

  1. :  excessive ventilation; specifically :  excessive rate and depth of respiration leading to abnormal loss of carbon dioxide from the blood—called also overventilation




Learn More about hyperventilation


Seen and Heard

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

WORD OF THE DAY

a timid, meek, or unassertive person

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

alt-5746713d76276

Which of these is a synonym of nonplus?

disapprove reduce perplex soothe
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