QUADRANT'AL, adjective [supra.] Pertaining to a quadrant; also, included in the fourth part of a circle; as quadrantal space. QUADRANT'AL, noun [supra.] A vessel used by the Romans; originally called amphora. It was square and contained 80 pounds of water.
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI