• noun a break in a layer of rock, caused by a fault or erosion
  • noun a band in the interior of the earth which separates two layers and through which seismic shocks do not pass
  • The condition or characteristic of not being continuous.
  • The condition in which a circuit does not have a continuous and complete path for the flow of current.
  • An abrupt change in a medium or a body. For instance, a point at which the impedance of a transmission line rapidly changes.
  • In a waveguide, an abrupt change in shape which results in reflections. Also called waveguide discontinuity.

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