contortuosityn.

/kənˌtɔːtjuːˈɒsɪti/Etymology: < Latin contortus (see contort adj.), after tortuōsitās tortuosity n.
rare.
the world > space > shape > curvature > coil > [noun] > coiling or winding together > condition of
1868 9 282 The peculiar contortuosity, twistiness of beech roots.
This entry has not yet been fully updated (first published 1893; most recently modified version published online March 2018).