troposphere
tro·posp·here
noun
1.
the lowest atmospheric layer; from 4 to 11 miles high (depending on latitude)
Origin
Borrowed from French troposphère. Equivalent to tropo- + -sphere.
Related words
Broader terms
Parts
Part of
WordNet 2.1 (Princeton University). Wiktionary (CC BY-SA). CMU Pronouncing Dictionary. WordNet 2.1 Copyright Princeton University. All rights reserved. Wiktionary content is available under the Creative Commons Attribution-ShareAlike Licence.