from The American Heritage® Dictionary of the English Language, 4th Edition
- n. The region of the atmosphere above the troposphere and below the mesosphere.
- n. An extremely high or the highest point or degree on a ranked scale: business expenses in the stratosphere.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Collectively, those layers of the Earth’s crust which primarily comprise stratified deposits.
- n. The region of the uppermost atmosphere where temperature increases along with the altitude due to the absorption of solar ultraviolet radiation by ozone. The stratosphere extends from the tropopause (10–15 kilometers) to approximately 50 kilometers, where it is succeeded by the mesosphere.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. the atmospheric layer between the troposphere and the mesosphere
French stratosphère : Latin strātus, a spreading out; see stratus + -sphère, sphere (from Old French espere; see sphere).(American Heritage® Dictionary of the English Language, Fourth Edition)
strat(um) + -o- + sphere (Wiktionary)