rectangularityn.

1645 T. Urquhart Trissotetras 18 For then will the Tangents be perspicuous, and so much the more for their Rectangularity, the one with the Radius, and the other with its Parallel, which, being touched at an Angle described in a Semicircle, confirmeth the Rectangularity of both.

1727 N. Bailey Universal Etymol. Eng. Dict. II Rectangularity, the being right-angled.

1809 M. Edgeworth Ennui vi, in Tales Fashionable Life I. 1 She sketched, in strong caricature, my relaxed elongation of limb, and his rigid rectangularity.

1849 J. D. Dana U.S. Exploring Exped.: Geol. (1850) iii. 281 The rectangularity in the intersections.

1851 Cambr. & Dublin Math. Jrnl. 6 50 A distortion in the plane yz, relatively to these axes, is measured by the deviation from rectangularity of this originally square section, that deviation being considered positive which makes the angles B and D acute.

1917 Times 3 Dec. 4/3 Its interesting historic embellishments were..repugnant to the narrow ‘classicism’ and the strict mathematical ‘rectangularity’ of Sir Christopher Wren.

1936 O. S. Puckle tr. M. von Ardenne Television Reception ii. 42 The photograph shows the evenness of the illumination and the almost perfect rectangularity of the picture format.

1951 N. Pevsner Middlesex (Buildings of Eng.) 42 Balustrades emphasize the severe rectangularity of the design.

1989 Nature 24 Aug. 621/2 The modest fill factors (rectangularity of the I-V curves) arise from residual concentration overpotentials.

2007 Vanity Fair (N.Y.) June (On Time Suppl.) 48/1 The Deco-ish rectangularity of '30s watches with crocodile straps.