Dipteral

Webster's Practical Dictionary- A Practical Dictionary of the Englih Language · 1884 · p. 119

dipler-al, a. {Eaton only. (Anc. Arch.) Having Hav a double row of columns on each flank, as well as in front and rear. — Dip'terous, -us, a. Having 2 wings, as among insects, or winglike proce es, as in plants.