The Holarctic is the terrestrial ecozone that encompasses the majority of habitats found throughout the northern continents of the world. This region is divided into the Palearctic, consisting of North Africa and all of Eurasia, with the exception of Southeast Asia and the Indian subcontinent, and the Nearctic, consisting of North America north of...
• (a.) designating a realm or region including the northern parts of the Old and the New World. It comprises the Palearctic and Nearctic regions or subregions. • (a.) Of or pert. to the arctic regions collectively
a geographic term for the areas north of the Tropic of Cancer.
Hol'arc·tic adjective [ Holo- + arctic .] Of or pert. to the arctic regions collectively ; specif. (Zoögeography) , designating a realm or region including the northern parts of the Old and the New World. It comprises the Palearctic and Nearctic regions or subregion...
A combination of the Nearctic and Palearctic zoogeographic regions; the Holarctic encompasses the Northern Hemisphere north of the tropics.
The combined northern hemisphere Nearctic and Palearctic biogeographical regions.
ecozone referring to North America, Europe, Northern Africa and Eurasia
belonging or pertaining to a geographical division comprising the Nearctic and Palearctic regions.