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3 definitions found
From: DICT.TW English-Chinese Dictionary 英漢字典
 acrania
 無顱畸形
From: DICT.TW English-Chinese Medical Dictionary 英漢醫學字典
 acra·nia /(ˈ)eˈkrenɪə/ 名詞
 無顱蓋
From: Webster's Revised Unabridged Dictionary (1913)
 A·cra·ni·a n.
 1. Physiol. Partial or total absence of the skull.
 2. pl. Zool. The lowest group of Vertebrata, including the amphioxus, in which no skull exists.