First Known Use: 1975
Dictionary
Gaia
noun \ˈgī-ə\
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 (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
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Origin of GAIA
Greek, Gaea
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