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WordReference Random House Learner's Dictionary of American English © 2024ˈo•zone ˌhole, n. [countable]- Meteorologyany part of the ozone layer that has become reduced in size by pollution in the atmosphere, resulting in too much ultraviolet radiation passing through, and therefore warming, the atmosphere.
WordReference Random House Unabridged Dictionary of American English © 2024o′zone hole′, - Meteorologyany part of the ozone layer that has become depleted by atmospheric pollution, resulting in excess ultraviolet radiation passing through the atmosphere.
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