aeronomy

aeronomy

[ai-ron-uh-mee]
noun
the study of chemical and physical phenomena in the upper atmosphere.

Origin:
1955–60; aero- + -nomy

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Collins
World English Dictionary
aeronomy (ɛəˈrɒnəmɪ)
 
n
the science of the earth's upper atmosphere

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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American Heritage
Science Dictionary
aeronomy   (â-rŏn'ə-mē)  Pronunciation Key 
The scientific study of the upper atmospheric regions of the Earth and other planets, where the ionization of gas takes place. Aeronomy is also concerned with the atmospheres around comets and satellites, or any other atmosphere where ionization, particularly of oxygen, takes place.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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