deltoidal

adjective3

1. •
   Of, relating to, or resembling the deltoid muscle of the shoulder or its surrounding region.
2. •
   Resembling or shaped like a geometric kite (a deltoid); having the characteristics of a deltoid or pertaining to a polyhedron composed of kite-shaped faces.

   • Each face of the complex Catalan solid exhibits a distinctly deltoidal geometric boundary.
   • The polyhedron's surface can be decomposed into twelve independent, non-overlapping deltoidal sections.
3. •
   Of, relating to, or resembling a river delta.