Webster's Revised Unabridged Dictionary · 1913

Sinuosity

Sinuosity , noun

[Compare French sinuosité.]

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