| 单词 | mastoid antrum | 
| 释义 | Definition of mastoid antrum in English:mastoid antrumnoun 
 OriginLate 19th century; earliest use found in Daniel Roosa (b. 1838). After scientific Latin antrum mastoideum; compare French antre mastoïdien. Definition of mastoid antrum in US English:mastoid antrumnoun 
 OriginLate 19th century; earliest use found in Daniel Roosa (b. 1838). After scientific Latin antrum mastoideum; compare French antre mastoïdien.  | 
	
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