Entomology definition of Mandibular segment September 9, 2014 Raj Entomology Dictionary 0 Please Like Us!!! DesiGoogly.com > Education News > Entomology Dictionary > Entomology definition of Mandibular segment Entomology definition of Mandibular segment: the fourth or mandible bearing segment of head. Entomology Mandibular segment definitionMandibular segment Entomology explanationMandibular segment Entomology meaningReviews & Comments