|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