D defs.my
Entry 1 sense Webster, 1913

Triquadrantal

· Tri·quad·ran·tal · IPA
01 a. Having three quadrants; thus, a triquadrantal triangle is one whose three sides are quadrants, and whose three angles are consequently righ…
  1. 1.
    Having three quadrants; thus, a triquadrantal triangle is one whose three sides are quadrants, and whose three angles are consequently right angles.(Spherical Trig.)