Etymology: Medieval Latin tympanias, from Greek, from tympanon drum
1.
a. : tympanites
b. : resonance on percussion
2. archaic
a. : a condition of being swollen out or inflated (as with pride, arrogance, or self-satisfaction)
b. : bombastic or turgid style (as of expression)
3. : tympan
Useful english dictionary. 2012.