from The Century Dictionary and Cyclopedia
- Situated behind the triangular: noting the triangular cell in the hind wing of a dragon-fly.
- n. The triangular cell in the hind wing of a dragon-fly.
Sorry, no etymologies found.
Discoidal areolets: Odonata; a varying number of rows of cells on the outer side of the triangle between the short sector (M 4 of Comst.) and the upper sector of the triangle (Cu 1 of Comst.) = post-triangular cells