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Wiktionary
ozonosphere

n. A layer in part of the stratosphere that has a larger than normal concentration of ozone; the ozone layer

WordNet
ozonosphere

n. a layer in the stratosphere (at approximately 20 miles) that contains a concentration of ozone sufficient to block most ultraviolet radiation from the sun [syn: ozone layer]

Usage examples of "ozonosphere".

For each problem we have uncovered, such as the effect of halocarbons on the ozonosphere, might there not be another dozen lurking around the corner?