Question

which word part means \eardrum\? retin/o presby/o tympan/o ot/o

Explanation:

• retin/o: This word part refers to the retina (of the eye), not the eardrum.
• presby/o: This word part means old age (often related to vision or hearing changes associated with aging), not the eardrum.
• tympan/o: This word part specifically means eardrum. For example, "tympanoplasty" is a surgical procedure on the eardrum.
• ot/o: This word part means ear in general, not specifically the eardrum.

Answer:

tympan/o