Entomology definition of Hair September 9, 2014 Raj Entomology Dictionary 0 Please Like Us!!! DesiGoogly.com > Education News > Entomology Dictionary > Entomology definition of Hair Entomology definition of Hair: a slender, flexible filament of equal diameter. Entomology Hair definitionHair Entomology explanationHair Entomology meaningReviews & Comments