Definitions for ionosphereaɪˈɒn əˌsfɪər

This page provides all possible meanings and translations of the word ionosphere

Princeton's WordNet

  1. ionosphere(noun)

    the outer region of the Earth's atmosphere; contains a high concentration of free electrons


  1. ionosphere(n.)

    the outer region of the earth's atmosphere, beyond which is the exosphere; it contains a high concentration of free electrons and ions, and extends from about 50 miles to about 250 miles above the earth's surface, but the height shows daily and seasonal variation, and the composition of the particles in the ionosphere is also affected by events such as solar flares.


  1. ionosphere(Noun)

    The part of the Earth's atmosphere beginning at an altitude of about 50 kilometers (31 miles) and extending outward 500 kilometers (310 miles) or more.

  2. ionosphere(Noun)

    The similar region of the atmosphere of another planet.


  1. Ionosphere

    The ionosphere is a region of the upper atmosphere, from about 85 km to 600 km altitude, and includes the thermosphere and parts of the mesosphere and exosphere. It is distinguished because it is ionized by solar radiation. It plays an important part in atmospheric electricity and forms the inner edge of the magnetosphere. It has practical importance because, among other functions, it influences radio propagation to distant places on the Earth.

Dictionary of Military and Associated Terms

  1. ionosphere

    That part of the atmosphere, extending from about 70 to 500 kilometers, in which ions and free electrons exist in sufficient quantities to reflect electromagnetic waves.

Images & Illustrations of ionosphere

Translations for ionosphere

From our Multilingual Translation Dictionary

Get even more translations for ionosphere »


Find a translation for the ionosphere definition in other languages:

Select another language:

Discuss these ionosphere definitions with the community:

Word of the Day

Would you like us to send you a FREE new word definition delivered to your inbox daily?

Please enter your email address:     


Use the citation below to add this definition to your bibliography:


"ionosphere." STANDS4 LLC, 2015. Web. 29 Nov. 2015. <>.

Are we missing a good definition for ionosphere? Don't keep it to yourself...

Nearby & related entries:

Alternative searches for ionosphere:

Thanks for your vote! We truly appreciate your support.