Entomology definition of Epithelium September 7, 2014 Raj Entomology Dictionary 0 Please Like Us!!! DesiGoogly.com > Education News > Entomology Dictionary > Entomology definition of Epithelium Entomology definition of Epithelium: the layer of cells which covers a surface or lines a cavity. Entomology Epithelium definitionEpithelium Entomology explanationEpithelium Entomology meaningReviews & Comments