Entomology definition of Mediastinal September 9, 2014 Raj Entomology Dictionary 0 Please Like Us!!! DesiGoogly.com > Education News > Entomology Dictionary > Entomology definition of Mediastinal Entomology definition of Mediastinal: relating to the longitudinal median line or area. Entomology Mediastinal definitionMediastinal Entomology explanationMediastinal Entomology meaningReviews & Comments