terraforming
Britishnoun
Etymology
Origin of terraforming
C20: from Latin terra earth + forming
Explanation
Terraforming is altering a planet or moon to make it habitable for humans. If you dream of living on Mars one day, you'll be cheering on any scientific advances in terraforming. Astronomer Carl Sagan is credited with the earliest terraforming concept, a 1961 theory about how scientists might change the atmosphere of Venus so that humans could live there safely. The enormous scientific and economic challenges to terraforming any known planets make this, as of now, a hypothetical idea. The word terraforming was coined in 1942 by science fiction writer Jack Williamson, from the Latin terra, "earth," and form, "shape or mold."
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
A new workshop summary, however, argues that recent advances mean terraforming should now be treated as a legitimate area of scientific research, even if any real attempt remains far in the future.
From Science Daily ● Jul. 17, 2026
For nearly two decades, the art form formerly known as television did nothing but grow, in wild and glorious abandon, as if it had been touched by a terraforming agent from “Doctor Who.”
From Los Angeles Times ● Jan. 11, 2024
"One idea is that CFCs could be useful in terraforming a planet to make it warmer — this idea has been suggested as a way for humans to terraform Mars," Misra said.
From Salon ● Feb. 28, 2022
The first level of terraforming is at 60 millibars, a factor of 10 from where we are now.
From New York Times ● Jan. 2, 2022
These and other considerations suggest that a time scale for a significant terraforming of Mars is probably hundreds to thousands of years.
From "Cosmos" by Carl Sagan
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Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.