pitch plane

noun Machinery.

See under pitch surface.

Nearby words

  1. pitch lake,
  2. pitch line,
  3. pitch on,
  4. pitch pine,
  5. pitch pipe,
  6. pitch shot,
  7. pitch surface,
  8. pitch wart,
  9. pitch woo,
  10. pitch-and-putt

pitch surface


(in a gear or rack) an imaginary surface forming a plane (pitch plane), a cylinder (pitch cylinder), or a cone or frustrum (pitch cone) that moves tangentially to a similar surface in a meshing gear so that both surfaces travel at the same speed.

Origin of pitch surface

First recorded in 1885–90

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019