Antarctalian
adjective
Ant·arc·ta·lian
¦ant‧ˌärk¦tālyən,
-lēən also -n‧ˌtär-
: of, relating to, or being the marine biogeographic realm that comprises all regions south of a line at which mean temperatures approximate 44° F
Word History
Etymology
New Latin Antarctalia, the antarctic marine realm (from Latin antarcticus antarctic + New Latin -alia) + English -an
First Known Use
1885, in the meaning defined above