smoothness

About 0.97 uses per million words.

Meaning

1. noun The condition of being smooth; the degree or measure of said condition.
2. noun The highest order of derivative (the differentiability class) over a given domain.

   Smoothness can vary from 0 (for a nondifferentiable function) to infinity (for a smooth function).

3. noun The quantity measured by the modulus of smoothness.

Similar words

softness soft delicacy gentleness kindness sweetness supersmoothness smoothability semismoothness slickness

Often followed by

of and in is or with to that constraint