Entomology definition of Vertical margin September 14, 2014 Raj Entomology Dictionary 0 Please Like Us!!! DesiGoogly.com > Education News > Entomology Dictionary > Entomology definition of Vertical margin Entomology definition of Vertical margin: in Diptera, the limit between front and occiput. Entomology Vertical margin definitionVertical margin Entomology explanationVertical margin Entomology meaningReviews & Comments