Entomology definition of Externo-median nerve September 7, 2014 Raj Entomology Dictionary 0 Please Like Us!!! DesiGoogly.com > Education News > Entomology Dictionary > Entomology definition of Externo-median nerve Entomology definition of Externo-median nerve: the humeral and discoidal veins together. Entomology Externo-median nerve definitionExterno-median nerve Entomology explanationExterno-median nerve Entomology meaningReviews & Comments