What does "tympan" mean?

Tympan: (Arch.) A panel; a tympanum.

Additional senses

  1. 2.(Print.) A frame covered with parchment or cloth, on which the blank sheets are put, in order to be laid on the form to be impressed. Tympan sheet (Print.), a sheet of paper of the same size as that to be printed, pasted on the tympan, and serving as a guide in laying the sheets evenly for printing. W. Savage.

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