Bo"re*al (&?;), a. [L. borealis: cf.
F. boréal. See Boreas.] Northern; pertaining to
the north, or to the north wind; as, a boreal bird; a boreal
blast.
So from their own clear north in radiant streams,
Bright over Europe bursts the boreal morn.
Thomson.
Bo"re*al, a. (Biogeography)
Designating or pertaining to a terrestrial division consisting of
the northern and mountainous parts of both the Old and the New World;
-- equivalent to the Holarctic region exclusive of the
Transition, Sonoran, and corresponding areas. The term is used by
American authors and applied by them chiefly to the Nearctic
subregion. The Boreal region includes approximately all of
North and Central America in which the mean temperature of the hottest
season does not exceed 18° C. (= 64.4° F.). Its subdivisions
are the Arctic zone and Boreal zone, the latter
including the area between the Arctic and Transition zones.
Bo"re*al, a. (Biogeography)
Designating or pertaining to a terrestrial division consisting of
the northern and mountainous parts of both the Old and the New World;
-- equivalent to the Holarctic region exclusive of the
Transition, Sonoran, and corresponding areas. The term is used by
American authors and applied by them chiefly to the Nearctic
subregion. The Boreal region includes approximately all of
North and Central America in which the mean temperature of the hottest
season does not exceed 18° C. (= 64.4° F.). Its subdivisions
are the Arctic zone and Boreal zone, the latter
including the area between the Arctic and Transition zones.
