ductusn.

1699 M. Lister Journey to Paris (new ed.) 72 The same happens to the Ductus Bilaris in its insertion into the Guts.

1713 W. Cheselden Anat. Humane Body iv. iii. 171 After the Birth, the Umbilical-Vein becomes a Ligament and the Ductus Venosus, becomes useless, contracts, and disappears.

1811 London Dissector (ed. 3) viii. 178 The aorta..is connected to the pulmonary artery by a ligament, which in the fœtus, was a large canal, the Ductus Arteriosus.

1846 Dublin Q. Jrnl. Med. Sci. 2 505 Fungous Growth round the Orifice of the Ductus Choledochus.

1846 Dublin Q. Jrnl. Med. Sci. 2 505 The ductus communis was greatly dilated, but the obstruction to the flow of the bile had never been complete.

1927 J. B. S. Haldane & J. S. Huxley Animal Biol. iv. 97 Ductus arteriosus, derived from part of the embryonic arterial arch system, and connecting pulmonary artery with..the aorta.

1962 H. Davson & M. G. Eggleton Princ. Human Physiol. (ed. 13) xiii. 297 As the arterial blood of the umbilical vein passes from the placenta, the greater part of it traverses the ductus venosus and enters the inferior vena cava.

1962 H. Davson & M. G. Eggleton Princ. Human Physiol. (ed. 13) xiii. 299 About 78% of the right ventricular output passes into the descending aorta via the ductus arteriosus.

1962 H. Davson & M. G. Eggleton Princ. Human Physiol. (ed. 13) lxiv. 1480 The vasa efferentia lead to a single long duct, the ductus epididymis.

1922 New Internat. Encycl. (ed. 2) X. 11 The Bulgarian ductus of the Glagolitsa is round, while the Croatian is more angular.

1933 Burlington Mag. July 23/1 The ‘ductus’ appears to me to be absolutely that of Dürer's own pen.

1934 R. C. Priebsch & W. E. Collinson German Lang. ii. ix. 404 The script is round Anglo-Saxon, though of a more or less cursive ductus.

1954 N. Denholm-Young Handwriting in Eng. & Wales iv. 32 The method of tracing the strokes, and the resulting general appearance of the script can conveniently be termed the duct or ductus.