Definition of point contact in English:

point contact

noun

Electronics
  • The contact of a metal point with the surface of a semiconductor so as to form a rectifying junction.

    • ‘They studied how the conductance in a point contact changes as the density of electrons in the reservoirs and connecting channel is increased.’
    • ‘The short rods of Fig.5, A and B, show limited side-by-side association, and many single point contacts.’
    • ‘Because balls make point contact with the rails, at high loads the ball bearings will indent the rails, causing permanent damage.’