global warming

noun
an increase in the earth's average atmospheric temperature that causes corresponding changes in climate and that may result from the greenhouse effect.

Origin:
1975–80

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source Link To Global warming
Collins
World English Dictionary
global warming
 
n
an increase in the average temperature worldwide believed to be caused by the greenhouse effect

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
Cite This Source
Etymonline
Word Origin & History

global warming
by 1983 as the name for overall rising temperatures and attendant consequences as a result of human activity. Originally theoretical, popularized as a reality from 1989.
Online Etymology Dictionary, © 2010 Douglas Harper
Cite This Source
American Heritage
Science Dictionary
global warming  
An increase in the average temperature of the Earth's atmosphere, especially a sustained increase great enough to cause changes in the global climate. The Earth has experienced numerous episodes of global warming through its history, and currently appears to be undergoing such warming. The present warming is generally attributed to an increase in the greenhouse effect , brought about by increased levels of greenhouse gases, largely due to the effects of human industry and agriculture. Expected long-term effects of current global warming are rising sea levels, flooding, melting of polar ice caps and glaciers, fluctuations in temperature and precipitation, more frequent and stronger El Niños and La Niñas, drought, heat waves, and forest fires. See more at greenhouse effect.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source
American Heritage
Cultural Dictionary

global warming definition


The term attached to the notion that the Earth's temperature is increasing due to the greenhouse effect.

Note: Whether global warming is actually happening is a subject of scientific debate.
The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
Cite This Source
Example sentences
Less often realised, though, is that global warming does far more damage to
  poor countries than they do to the climate.
What might be less clear is the role alternative fuels play in global warming.
The result would be catastrophic global warming.
Is it due to global warming? The jury is still out.
Copyright © 2014 Dictionary.com, LLC. All rights reserved.
  • Please Login or Sign Up to use the Recent Searches feature