• synonyms

key plate

noun Printing.
  1. (in color printing) the plate providing the greatest definition of detail, usually the black plate, on which the other plates are registered.
Show More

Origin of key plate

First recorded in 1905–10
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for key plate

Historical Examples

  • This done, we next take the frame and remove the key-plate from it.

    Scientific American Supplement, No. 561, October 2, 1886


  • By giving the key a quarter-turn the slit in the key-plate compresses the springs, and they are then withdrawn from the lock.