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English definition of “mediastinum”

mediastinum

noun uk   /ˌmiː.di.əˈstaɪn.əm/ us    /ˌmiː.di.əˈstɑɪ.nəm/ specialized
[C] (plural mediastina) a structure that divides a body part in the centre: a mediastinal tumourSubstances and structures in the body
the area of the chest that contains the heart and other organs and tissues584 544
(Definition of mediastinum from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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