Noun
The quality or state of being wavy.
Source: Webster's dictionaryAt small angles of incident light, waviness results in reduced reflectivity because of the steepness of the reflectivity-vs. Source: Internet
Hot spots are classified as concentrated thermal regions that alternate between both sides of a disc that distort it in such a way that produces a sinusoidal waviness around its edges. Source: Internet
The long top-coat is quite flat, with varying degrees of waviness or curling. Source: Internet