Triquadrantal

1 definition found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Triquadrantal \Tri`quad*ran"tal\, a. [Pref. tri- + quadrantal.]
     (Spherical Trig.)
     Having three quadrants; thus, a triquadrantal triangle is one
     whose three sides are quadrants, and whose three angles are
     consequently right angles.
     [1913 Webster]