| 单词 | mastoidal | 
| 释义 | Definition of mastoidal in English:mastoidaladjective maˈstɔɪdl Anatomy Zoology 
 OriginEarly 19th century; earliest use found in Robert Knox (1791–1862), anatomist and ethnologist. From mastoid + -al. Definition of mastoidal in US English:mastoidaladjectivemaˈstɔɪdl Anatomy Zoology 
 OriginEarly 19th century; earliest use found in Robert Knox (1791–1862), anatomist and ethnologist. From mastoid + -al.  | 
	
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