mountain sickness

noun
|Updated on: 3 May 2018

Definition of mountain sickness

: altitude sickness experienced by mountain climbers or by those ascending or living especially above 8000 to 10,000 feet (about 2500 to 3000 meters) elevation and caused by insufficient oxygen in the air breathed; especially : acute mountain sickness

Recent Examples of mountain sickness from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'mountain sickness.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of mountain sickness

1848

in the meaning defined above

See Words from the same year
NEW! Time Traveler

Medical Dictionary

mountain sickness

noun

medical Definition of mountain sickness

: altitude sickness experienced especially above 8000 to 10,000 feet (about 2500 to 3000 meters) and caused by insufficient oxygen in the air; especially : acute mountain sickness

Learn More about mountain sickness


Seen and Heard

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

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

WORD OF THE DAY

deserving of honor or esteem

Get Word of the Day daily email!

Test Your Vocabulary

Name More Food!

How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

TAKE THE QUIZ
Word Winder's CrossWinder

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

TAKE THE QUIZ

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!