Entomology definition of Anal loop September 7, 2014 Raj Entomology Dictionary 0 Please Like Us!!! DesiGoogly.com > Education News > Entomology Dictionary > Entomology definition of Anal loop Entomology definition of Anal loop: Odonata; the loop formed by the angulations of 1st anal vein. Anal loop Entomology explanationAnal loop Entomology meaningEntomology Anal loop definitionReviews & Comments