climate change

noun

: significant and long-lasting change in the Earth's climate and weather patterns
The half-tonne … turtles were thought to have died out 30,000 to 40,000 years ago because of climate change.New Scientist
especially, in current use : such change associated with global warming
Concerns about greenhouse gas emissions and global climate change are renewed among scientists and the public with every new report about the possibility of melting icecaps and rising temperatures. Randy Showstack
Drought is a paleontological fact in the American West, but the latest desiccations have a new signature, and my region's climatologists, hydrologists, foresters, and water managers are nearly unanimous in their conviction that what we are seeing now is climate change, the anthropogenic kind, a consequence of too much CO2 and other greenhouse gases. Kenneth Brower

Examples of climate change in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Experts say that's because climate change has increasingly led to early snow melt in Canada, which leaves behind dry land that is fuel for large wildfires. Maia Pandey, jsonline.com, 22 July 2025 For ten years, youth plaintiffs had argued that government actions causing climate change violated their generation’s constitutional rights to life, liberty, and property. Marianne Krasny, Forbes.com, 22 July 2025 Some have calculated that in a worst-case scenario, climate change could eventually redistribute water in a way that would make the days milliseconds longer. Nell Greenfieldboyce, NPR, 22 July 2025 For the most part, the bacterial infections usually occur in Gulf Coast states, but in recent years, reports of Vibrio vulnificus have started to be seen further North as climate change fuels warmer oceans. Joyce Orlando, Nashville Tennessean, 21 July 2025 See All Example Sentences for climate change

Word History

First Known Use

1854, in the meaning defined above

Time Traveler
The first known use of climate change was in 1854

Browse Nearby Words

Cite this Entry

“Climate change.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/climate%20change. Accessed 29 Jul. 2025.

Kids Definition

climate change

noun
: significant and long-lasting change in the earth's climate and weather patterns
especially : such change associated with global warming
Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!