chemosphere

noun
che·​mo·​sphere | \ˈkēmə, ¦kemə+ˌ\

Definition of chemosphere 

: a stratum of the upper atmosphere in which photochemical reactions are prevalent and which begins about 20 miles above the earth's surface

Love words?

You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.

Start your free trial today and get unlimited access to America's largest dictionary, with:

  • More than 250,000 words that aren't in our free dictionary
  • Expanded definitions, etymologies, and usage notes
  • Advanced search features
  • Ad free!

History and Etymology for chemosphere

chem- + sphere

Keep scrolling for more

Learn More about chemosphere

Share chemosphere

Statistics for chemosphere

Look-up Popularity

Comments on chemosphere

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

WORD OF THE DAY

a soft lustrous wool fabric with mohair

Get Word of the Day daily email!

Test Your Vocabulary

Late Autumn 2018 Words of the Day Quiz

  • frosted-autumn-leaves
  • Which is a synonym of yahoo?
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

TAKE THE QUIZ
Citation

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!