Added 9 October 2026 eardrum /ˈɪəˌdɹʌm/ noun Categories: The BodyRare Words In Latin: tympanum, myrinx Wiktionary noun ! Definition from Wiktionary (CC BY-SA). Pronunciation from Wiktionary, via Kaikki.org. More about eardrum at Wordnik → Where our words come from → A thin membrane that separates the outer ear from the middle ear and transmits sound from the air to the malleus. Origin From ear + drum. From Wiktionary, via Kaikki.org (CC BY-SA) Related Words: tympanummyringavibratepuncturedvibratestimpanumtympanicumectotympanic Back to today's word