01 a. Of or pertaining to a quadrant; also, included in the fourth part of a circle; as, quadrantal space.
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1.
Of or pertaining to a quadrant; also, included in the fourth part of a circle; as, quadrantal space.(Geom.)
Phrases & compounds
Quadrantal triangle —
a spherical triangle having one side equal to a quadrant or arc of 90°.
Quadrantal versor —
a versor that expresses rotation through one right angle.