NIVAL Meaning of NIVAL in English /nuy"veuhl/ , adj.of or growing in snow: nival flora.[ 1650-60; nivalis of, belonging to snow, snowy, equiv. to niv- (s. of nix ) snow + -alis -AL 1 ] Random House Webster's Unabridged English dictionary. Полный английский словарь Вебстер - Random House . 2012