Entomology definition of Tetragonal September 14, 2014 Raj Entomology Dictionary 0 Please Like Us!!! DesiGoogly.com > Education News > Entomology Dictionary > Entomology definition of Tetragonal Entomology definition of Tetragonal: having four sides or angles: quadrangular. Entomology Tetragonal definitionTetragonal Entomology explanationTetragonal Entomology meaningReviews & Comments