Quadrantal a. : Of or pertaining to a quadrant; also, included in the fourth part of a circle; as, quadrantal space.

Quadrantal n. : A cubical vessel containing a Roman cubic foot, each side being a Roman square foot; -- used as a measure.

Quadrantal n. : A cube.

Example:
If the difference between two angles is a Quadrantal angle, is one of them the reference angle?

Taxonomy
quadrant, dictionary, Encyclopedia, versor, thesaurus browser, online dictionary, Free Online Dictionary, spherical triangle, English dictionary, Translations, free online English dictionary, law, explanation, Acronyms, Idioms, pertaining, fourth part, circle.

Defination from the web:
Quadrantal in the Online Dictionary. Meaning of Quadrantal. Pronunciation of Quadrantal. Translations of Quadrantal. Quadrantal synonyms, Quadrantal antonyms. ... Quadrantal versor. a versor that expresses rotation through one right angle. n. 1. (Rom. ...