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Webster 1913 Edition

Adj.

[L.

quadrantalis

containing the fourth fourth part of a measure.]

(Geom.)

Of or pertaining to a quadrant; also, included in the fourth part of a circle;

as,

quadrantal

space

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.

Noun.

[L.]

(Rom. Antiq.)

A cubical vessel containing a Roman cubic foot, each side being a Roman square foot; – used as a measure.

A cube.

[R.]

Adj.

[supra.] Pertaining to a quadrant; also, included in the fourth part of a circle; as quadrantal space.

Noun.

[supra.] A vessel used by the Romans; originally called amphora. It was square and contained 80 pounds of water.