ozone hole

noun

any part of the ozone layer that has become depleted by atmospheric pollution, resulting in excess ultraviolet radiation passing through the atmosphere.

Origin of ozone hole

First recorded in 1985–90

Words nearby ozone hole

ozocerite, ozon-, ozonation, ozone, ozone-friendly, ozone hole, ozone layer, ozone sickness, ozonic ether, ozonide, ozoniferous

Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Cultural definitions for ozone hole

ozone hole

A depletion of ozone that occurs over Antarctica in the winter. The ozone returns to normal levels in the summer, and the amount of depletion varies from year to year. The hole is thought to be caused by a combination of the peculiarities of atmospheric circulation (see atmosphere) near the South Pole and chemical reactions involving chlorofluorocarbons in the atmosphere and ice crystals in clouds.

Scientific definitions for ozone hole

ozone hole

A severe depletion of ozone in a region of the ozone layer, particularly over Antarctica and over the Arctic. The depletion is caused by the destruction of ozone by CFCs and by other compounds, such as carbon tetrachloride (CCl4) and carbon tetrafluoride (CF4). The amount of ozone in ozone holes is about 55 to 60 percent of the normal concentration in the ozone layer. Although the full effect of increased ozone depletion is not yet known, the amount of ultraviolet radiation the Earth receives is greatly increased by ozone depletion, creating a heightened risk of skin cancers and likely contributing to global warming. See Note at ozone.

单词	ozone hole
释义	ozone hole noun any part of the ozone layer that has become depleted by atmospheric pollution, resulting in excess ultraviolet radiation passing through the atmosphere. Origin of ozone hole First recorded in 1985–90 Words nearby ozone hole ozocerite, ozon-, ozonation, ozone, ozone-friendly, ozone hole, ozone layer, ozone sickness, ozonic ether, ozonide, ozoniferous Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 Cultural definitions for ozone hole ozone hole A depletion of ozone that occurs over Antarctica in the winter. The ozone returns to normal levels in the summer, and the amount of depletion varies from year to year. The hole is thought to be caused by a combination of the peculiarities of atmospheric circulation (see atmosphere) near the South Pole and chemical reactions involving chlorofluorocarbons in the atmosphere and ice crystals in clouds. The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved. Scientific definitions for ozone hole ozone hole A severe depletion of ozone in a region of the ozone layer, particularly over Antarctica and over the Arctic. The depletion is caused by the destruction of ozone by CFCs and by other compounds, such as carbon tetrachloride (CCl4) and carbon tetrafluoride (CF4). The amount of ozone in ozone holes is about 55 to 60 percent of the normal concentration in the ozone layer. Although the full effect of increased ozone depletion is not yet known, the amount of ultraviolet radiation the Earth receives is greatly increased by ozone depletion, creating a heightened risk of skin cancers and likely contributing to global warming. See Note at ozone. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
随便看	vehemently vehicle vehicular v-eight veii veil veiled veiling veilleuse veillonella veiltail goldfish vein veining veinlet vein of bulb of penis vein of cochlear canal vein of eyelid vein of kidney vein of knee vein of pterygoid canal vein of vestibular aqueduct vein of vestibular bulb veins veins of vertebral column veinstone