(obsolete) A square, a quadrangle.

Alternative form of quadrans (“Roman coin”)

Obsolete form of quatrain.

A bronze coin of the Roman republic worth one quarter of an as.

(astronomy, obsolete) A former constellation between Boötes and Draco, near the tail of Ursa Major.

One of the four sections made by dividing an area with two perpendicular lines. / (mathematics) One of the four regions of the Cartesian plane bounded by the x-axis and y-axis.

(geometry) A geometric shape with four angles and four straight sides; a four-sided polygon. / A courtyard which is quadrangular. / The buildings forming the border of such a courtyard.

Having the shape of a quadrangle; in the shape of a quadrangle.

A slotted plate for carrying the gears of a lathe. / A Petri dish, divided into four, and containing agar and other materials, used in the identification of bacteria.

plural of quadrant