The story
From amphi- + Ancient Greek γῆ (gê) + -an. Compare hypogean and epigean.
First known use, by meaning
- 19th century Extending over all the zones of the Earth, from the tropics to the poles.
Etymology from Wiktionary, CC BY-SA 4.0.
Today it means: Extending over all the zones of the Earth, from the tropics to the poles. Full definition →