Niveous is an adjective that means related to or resembling snow.
The Latin word ‘nix’ (NEEKS uh) means snow. Niveous, a word that entered English in the early 17th century, may refer either to a large quantity of snow or something that resembles snow. The niveous look of dad’s graying beard gives him a Santa Claus look. If his beard were any whiter we might be tempted to shovel his face.