The Collaborative International Dictionary
Waviness \Wav"i*ness\, n. The quality or state of being wavy.
Wiktionary
n. 1 The quality of being wavy; the extent to which something is wavy. 2 (context of hair English) A tendency to form waves or curls.
Wikipedia
Waviness is the measurement of the more widely spaced component of surface texture. It is a broader view of roughness because it is more strictly defined as "the irregularities whose spacing is greater than the roughness sampling length". It can occur from machine or work deflections, chatter, residual stress, vibrations, or heat treatment. Waviness should also be distinguished from flatness, both by its shorter spacing and its characteristic of being typically periodic in nature.
Usage examples of "waviness".
It was still shorter than was fashionÂable, but long enough to cover the scar that bisected his skull, and it was dark and shiny, undulled by sunlight, and beginning to show a hint of waviness.