Entomology definition of Sulcus September 13, 2014 Raj Entomology Dictionary 0 Please Like Us!!! DesiGoogly.com > Education News > Entomology Dictionary > Entomology definition of Sulcus Entomology definition of Sulcus: a furrow or groove: a groove-like excavation. Entomology Sulcus definitionSulcus Entomology explanationSulcus Entomology meaningReviews & Comments