/ Dictionary / Index T tympan: Meaning and Definition of Find definitions for: tym•pan Pronunciation: (tim'pun), [key] — n. a padlike device interposed between the platen or its equivalent and the sheet to be printed, in order to soften and equalize the pressure. tympanum (defs. 2, 4). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: tympan (Thesaurus) tymbal tympani Related Content Daily Word Quiz: perspicacious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language