3. (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.
Tym"pa*nal (?), n. Tympanic.
Tym*pan"ic (?; 277), a. [See Tympanum.] 1. Like a tympanum or drum;
acting like a drumhead; as, a tympanic membrane.