atmosphereless

Cultural Dictionary

atmosphere definition


The blanket of gas on the surface of a planet or satellite.

Note: The atmosphere of the Earth is roughly eighty percent nitrogen and twenty percent oxygen, with traces of other gases. (See ionosphere, stratosphere, and troposphere.)
The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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