Sinuosity

n.	1.	Quality or state of being sinuous.
	2.	A bend, or a series of bends and turns; a winding, or a series of windings; a wave line; a curve. A line of coast certainly amounting, with its sinuosities, to more than 700 miles. - Sydney Smith.

Noun

1.

sinuosity - having curves; "he hated the sinuosity of mountain roads" Synonyms: sinuousness

curve, curved shape, sinuousness