antarctalian

\\|ant.ˌärk|tālyən, -lēən also -n.ˌtär-\ adjective

Usage: usually capitalized

Etymology: New Latin Antarctalia, the antarctic marine realm (from Latin antarcticus antarctic + New Latin -alia) + English -an

: of, relating to, or being the marine biogeographic realm that comprises all regions south of a line at which mean temperatures approximate 44° F