Entomology definition of Tympanic spiracle September 14, 2014 Raj Entomology Dictionary 0 Please Like Us!!! DesiGoogly.com > Education News > Entomology Dictionary > Entomology definition of Tympanic spiracle Entomology definition of Tympanic spiracle: in Diptera, the thoracic spiracle at base of wing. Entomology Tympanic spiracle definitionTympanic spiracle Entomology explanationTympanic spiracle Entomology meaningReviews & Comments