Of or pertaining to a region of the earth's surface including all of temperate and arctic North America and Greenland. In the geographical distribution of animals, this region is marked off as the habitat certain species.
Zoogeographical region (one of eight) comprising North America north of the tropic of Cancer and Greenland; compare Afrotropical & Palaearctic.
living in the northern part of the New World. In other words, North America (including Mexico) and Greenland.