tympanic antrum
noun
: a large air-containing cavity in the mastoid process communicating with the tympanum and often being the location of dangerous inflammation
called also mastoid antrum
Cite this Entry
“Tympanic antrum.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/tympanic%20antrum. Accessed 4 Nov. 2025.
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