Triquadrantal
Pronunciation : Tri`quad*ran"tal
Part of Speech : a.
Etymology : [Pref. tri- + quadrantal.] (Spherical Trig.)
Definition : Defn: Having three quadrants; thus, a triquadrantal triangle is one whose three sides are quadrants, and whose three angles are consequently right angles.
Source : Webster's Unabridged Dictionary, 1913