tangence

noun

1. (alt-of, alternative, countable, uncountable)Alternative form of tangency.

   “The points of intangence, or extangence, of two circumferences are the points of tangence of their intangents, or extangents.”

   “[…]to assure the belt passes only through said points of tangence,[…].”

   “The latter enables designers and engineers to describe geometric entities (points, lines, planes, curves, surfaces) by specification of constraints: distances, angles, incidences, tangences between geometric entities.”