Definitions
from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun A large area of the ozone layer over Antarctica that annually becomes depleted of ozone by the action of chlorofluorocarbons and other pollutants.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun A region of the
stratosphere overAntarctica (and a smaller one over theArctic ) that isdepleted of ozone in the localspring .
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun an area of the ozone layer (near the poles) that is seasonally depleted of ozone
Etymologies
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Examples
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