Palearctic
Multiple Entries:Palearctic Palaearctic
Concise Oxford English Dictionary © 2008 Oxford University Press:
Palearctic
▶adjective chiefly US variant spelling of Palaearctic.
Concise Oxford English Dictionary © 2008 Oxford University Press:
Palaearctic /ˌpalɪˈɑːktɪk, ˌpeɪ-/ (also chiefly US Palearctic)
▶adjective Zoology of or denoting a region comprising Eurasia north of the Himalayas, together with North Africa and the temperate part of the Arabian peninsula.
'Palearctic' also found in these Oxford entries:

