tympan

tympan

[tim-puhn]
noun
1.
Printing. a padlike device interposed between the platen or its equivalent and the sheet to be printed, in order to soften and equalize the pressure.
2.
tympanum ( defs 2, 4 ).

Origin:
before 900; Middle English: drum, Old English < Latin tympanum tympanum

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tympan (ˈtɪmpən)
 
n
1.  a membrane stretched over a frame or resonating cylinder, bowl, etc
2.  printing packing interposed on a hand-operated text between the platen and the paper to be printed in order to provide an even impression
3.  architect another name for tympanum
 
[Old English timpana, from Latin; see tympanum]

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