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Definition of terraforming
terraforming
/ˈtɛr.ə.fɔːr.mɪŋ/
ter · ra · form · ing
Plural:terraformings
•Adjective:terraformable
•Past Simple:terraformed
•Past Participle:terraformed
•Present Participle:terraforming
terraforming Lexical Profile
CEFR
C1
Grade
11
Tier
2
Usage
Rare
Syllables
4
terraforming Game Scores & Validity
Scrabble US
Scrabble UK
WWF
Wordle Guess
• noun
1
The hypothetical or fictional process of deliberately modifying the atmosphere, temperature, surface topography, or ecology of a planet, moon, or other celestial body to make it habitable by Earth-like life.
Example
"The science fiction novel explores the centuries-long project of the terraforming of Mars."
Synonyms
View all synonyms for terraforming• verb
1
To transform a planet, moon, or other celestial body so that it resembles the Earth and can support human and terrestrial life (present participle of terraform).
Example
"Scientists debated the ethical and technical challenges of terraforming a lifeless world."
• Nearby Words
Word Origin & Etymology
Coined by American science fiction author Jack Williamson in a 1942 novella published in Astounding Science Fiction, combining Latin 'terra' (earth) with the English verb 'form'.
Cite this Entry
Wordmom. (2026). Definition of Terraforming. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/terraforming