What does tympan(o) refer to?

• A. Urine, urinary tract
• B. Vein
• C. Ear drum, middle ear
• D. Front side (of the abdomen)

Answer: (C)

tympan(o) is a combining form used in medical terms to refer to the eardrum and the middle ear. The eardrum, or tympanic membrane, vibrates when sound enters the ear, and it sits at the boundary of the outer and middle ear. The term comes from Greek tympanon, meaning drum, which helps remember its association with the drum-like eardrum and the middle ear structures that follow. You’ll see it in words like tympanic membrane, tympanometry, tympanoplasty, and tympanostomy. The other options point to different body parts and use different roots (ur/o for urine, ven-/phleb- for veins, ventr-/anter- for the front of the abdomen), not tympan(o).