amphigean

== English == === Etymology === From amphi- +‎ Ancient Greek γῆ (gê) +‎ -an. Compare hypogean and epigean. === Adjective === amphigean (not comparable) (archaic) Extending over all the zones of the Earth, from the tropics to the poles[19th century]. amphigean species === References === “amphigean”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC.