ostium

英 ['ɒstɪəm] 美 ['ɒstɪəm]

• n. 小孔；孔口

名词复数: ostia

ostium的用法和样例：

词汇搭配

• aortic ostium 主动脉口

经典引文

• At open-heart surgery..ostium primum and secundum defects were corrected.

  出自：Journal of Pediatrics