Entomology definition of Sigmoid September 13, 2014 Raj Entomology Dictionary 0 Please Like Us!!! DesiGoogly.com > Education News > Entomology Dictionary > Entomology definition of Sigmoid Entomology definition of Sigmoid: shaped like the Greek letter sigma, or English S. Entomology Sigmoid definitionSigmoid Entomology explanationSigmoid Entomology meaningReviews & Comments