名詞 mediastinum:

1. the part of the thoracic cavity between the lungs that contains the heart and aorta and esophagus and trachea and thymus

me.di.as.ti.num

n.（名詞）
【復(fù)數(shù)】 me.di.as.ti.na[-n…] 【解剖學(xué)】
The region in mammals between the pleural sacs, containing the heart and all of the thoracic viscera except the lungs.
縱隔：哺乳動(dòng)物體內(nèi)將胸腔分為左右兩半的中隔，由心臟和除肺以外的胸腔臟器組成

來(lái)源：
New Latin
現(xiàn)代拉丁語(yǔ)
from neuter of Medieval Latin mediastonus [medial]
源自 中世紀(jì)拉丁語(yǔ) mediastonus的中性詞 [居中的]
alteration influenced by Latin mediastonus [inferior servant, drudge] probably from medius [middle, intermediary]
受 拉丁語(yǔ) mediastonus的影響 [低級(jí)仆人，苦工] 可能源自 medius [中間的]
of medius [middle] * see medhyo-
medius的變化 [中間的] *參見(jiàn) medhyo-

【引伸】
me.diasti.nal