Entomology definition of Argillaceous September 7, 2014 Raj Entomology Dictionary 0 Please Like Us!!! DesiGoogly.com > Education News > Entomology Dictionary > Entomology definition of Argillaceous Entomology definition of Argillaceous: of the texture, appearance or color of clay. Argillaceous Entomology explanationArgillaceous Entomology meaningEntomology Argillaceous definitionReviews & Comments