Entomology definition of Meso September 9, 2014 Raj Entomology Dictionary 0 Please Like Us!!! DesiGoogly.com > Education News > Entomology Dictionary > Entomology definition of Meso Entomology definition of Meso: middle: as prefix, drops the o when stem begins with a vowel. Entomology Meso definitionMeso Entomology explanationMeso Entomology meaningReviews & Comments