Relating to or characteristic of the broad or expansive Earth; worldwide or universal in scope.
From eurygaea with the adjectival suffix '-an,' describing things that relate to the expansive nature of the Earth or are globally significant.
When scholars used 'eurygaean' to mean 'worldwide,' they were poetically saying something affected all of Gaia—the living Earth—which is a much more romantic way than just saying 'global'!
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