Gaia

noun
\ ˈgī-ə How to pronounce Gaia (audio) \

Definition of Gaia

: the hypothesis that the living and nonliving components of earth function as a single system in such a way that the living component regulates and maintains conditions (such as the temperature of the ocean or composition of the atmosphere) so as to be suitable for life also : this system regarded as a single organism

First Known Use of Gaia

1972, in the meaning defined above

History and Etymology for Gaia

after Greek Gaîa, a primordial earth goddess in Greek myth, literally, "earth" — more at geo-

Keep scrolling for more

Learn More about Gaia

Statistics for Gaia

Cite this Entry

“Gaia.” The Merriam-Webster.com Dictionary, Merriam-Webster Inc., https://www.merriam-webster.com/dictionary/Gaia. Accessed 19 January 2020.

Comments on Gaia

What made you want to look up Gaia? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

to insert between existing elements

Get Word of the Day daily email!

Test Your Vocabulary

The Eponym Quiz

  • rubens painting
  • Which is the best synonym of bowdlerize?
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
Syn City

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ
Love words? Need even more definitions?

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