septentrional

from The Collaborative International Dictionary of English v.0.48

Septentrion \Sep*ten"tri*on\, Septentrional \Sep*ten"tri*on*al\,
   a. [L. septentrionalis: cf. F. septentrional.]
   Of or pertaining to the north; northern. "From cold
   septentrion blasts." --Milton.
   [1913 Webster]