Entomology definition of Umbonate September 14, 2014 Raj Entomology Dictionary 0 Please Like Us!!! DesiGoogly.com > Education News > Entomology Dictionary > Entomology definition of Umbonate Entomology definition of Umbonate: bossed; with an elevated knob in the centre. Entomology Umbonate definitionUmbonate Entomology explanationUmbonate Entomology meaningReviews & Comments