[ˈstə:nəm]
〔NA〕①胸骨：纵向不成对的骨板，形成胸前壁的中央部，上连锁骨，两侧与头七对肋骨之软骨相连。包括胸骨柄、胸骨体和剑突三部分；②腹板(昆虫)
习惯用语cleft sternum
胸骨裂：呈纵裂之胸骨- arnica
- A.R.N.M.D.
- Arnold-Chiari deformity(malformation,syndrome)
- Arnold of Villanova,Arnaldus de Villanova
- Arnold's bodies
- Arnold's canal,etc.
- arnotto
- A.R.O.
- AROA
- aroma
- aromatase
- aromatic
- aromatic-L-aminoacid decarboxylase
- aromatization
- aromine
- arousal
- arprinocid
- arrachement
- arrack
- arrangement
- arrector
- arrectores
- arrest
- arrested
- arrhaphia