Entomology definition of Synthlipsis September 13, 2014 Raj Entomology Dictionary 0 Please Like Us!!! DesiGoogly.com > Education News > Entomology Dictionary > Entomology definition of Synthlipsis Entomology definition of Synthlipsis: the basal constriction of the notocephalon in Notonectids. Entomology Synthlipsis definitionSynthlipsis Entomology explanationSynthlipsis Entomology meaningReviews & Comments