Entomology definition of Filiform September 8, 2014 Raj Entomology Dictionary 0 Please Like Us!!! DesiGoogly.com > Education News > Entomology Dictionary > Entomology definition of Filiform Entomology definition of Filiform: thread-like: slender and of equal diameter. Entomology Filiform definitionFiliform Entomology explanationFiliform Entomology meaningReviews & Comments