| 单词 | mastoid antrum |
| 释义 | > as lemmasmastoid antrum mastoid antrum n. [after scientific Latin antrum mastoideum (1777 or earlier); compare French antre mastoïdien (1855)] (in the human skull) a cavity within the petrous portion of the temporal bone, communicating with the air cells of the mastoid process and with the middle ear; (also) a homologous cavity in the skull of other vertebrates.extracted from mastoidadj.n.< as lemmas |
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