Merriam-Webster Logo
SINCE 1828
Menu
dictionary thesaurus

mesopause

noun
me·​so·​pause | \ ˈme-zə-ˌpȯz How to pronounce mesopause (audio) , ˈmē-, -sə-\

Definition of mesopause

: the upper boundary of the mesosphere where the temperature of the atmosphere reaches its lowest point

First Known Use of mesopause

1950, in the meaning defined above

History and Etymology for mesopause

mesosphere + pause

Keep scrolling for more

Learn More about mesopause

Statistics for mesopause

Look-up Popularity

Time Traveler for mesopause

The first known use of mesopause was in 1950

See more words from the same year

More from Merriam-Webster on mesopause

Rhyming Dictionary: Words that rhyme with mesopause

Britannica.com: Encyclopedia article about mesopause

Comments on mesopause

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

Show Comments  Hide Comments 

WORD OF THE DAY

fiduciary

Listen to the pronounciation of fiduciary

involving a confidence or trust

Get Word of the Day daily email!

Test Your Vocabulary

Word Puzzles

  • alt 57589b2b4c6a3
  • Which answer pairs best with each of the following words? living, estate, club, music, road, mile
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
Add Diction

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!

Words at Play
Ask the Editors
Word Games