Entomology definition of Rectilinear September 13, 2014 Raj Entomology Dictionary 0 Please Like Us!!! DesiGoogly.com > Education News > Entomology Dictionary > Entomology definition of Rectilinear Entomology definition of Rectilinear: in the form of a straight line. Entomology Rectilinear definitionRectilinear Entomology explanationRectilinear Entomology meaningReviews & Comments