tortuosity

noun

1. (countable, uncountable)tortuousness; tortuous condition or nature.
2. (countable, uncountable)Crookedness.

   “So far from seeking to "pettifogulise"—i.e., to find evasions for any purpose in a trickster's minute tortuosities of construction—exactly in the opposite direction, from mere excess of sincerity, most unwillingly I found, in almost everybody's words, an unintentional opening left for double interpretations.”

3. (countable, uncountable)A property of curve being tortuous, commonly used to describe diffusion in porous media.