Exosphere

Acceptable For Game Play - US & UK word lists

This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

The American Heritage® Dictionary of the English Language, 4th Edition
  • n. The outermost region of a planet's atmosphere.
  • n. The outermost layer of the earth's atmosphere, lying above the thermosphere and extending thousands of kilometers into space, from which molecules having sufficient velocity can escape the earth's gravitation.
  • Wiktionary, Creative Commons Attribution/Share-Alike License
  • n. the uppermost layer of a planet's atmosphere
  • n. an extremely thin atmosphere, as on Saturn's moon Dione
  • WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
  • n. the outermost atmospheric layer
  • Hypernym
    Words that are more generic or abstract
    layer