1. frostiness(n = noun.attribute) - coldness as evidenced by frost;
is a kind of cold, coldness, frigidity, frigidness, low temperature
Derived forms adjective frosty3, adjective frosty2
2. frostiness(n = noun.attribute) hoariness - a silvery-white color;
is a kind of white, whiteness
State or quality of being frosty. [1913 Webster]