NIVATION
Meaning of NIVATION in English
/nuy vay"sheuhn/ , n. Geol.
erosion resulting from the action of frost beneath a snowbank.
[ 1895-1900; niv- (s. of nix ) snow + -ATION ]
Random House Webster's Unabridged English dictionary.
Полный английский словарь Вебстер - Random House .
2012