intradosn.
/ɪnˈtreɪdɒs/ Architecture.
The lower or interior curve of an arch; esp. the lower curve of the voussoirs or stones which immediately form the arch. Cf. extrados n.
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coin1350
pendant1359
voussoir1359
springer1435
spandrel1477
spring?1553
pitch1615
kneeler1617
gimmalsa1652
face1664
of the third point1672
turn1677
sweep1685
hance1700
skew-back1700
summering1700
springing1703
tympan1704
hip1726
reins1726
rib1726
third point1728
quoin1730
archivolt1731
opening1739
soffit1739
shoulder1744
extrados1772
intrados1772
haunch1793
arch-stone1828
twist1840
coign1843
architrave1849
escoinçon1867
pulvino1907
pin1928
1772 C. Hutton Princ. Bridges iii The relations between their intrados and extrados.
1823 P. Nicholson New Pract. Builder 283 Design of a bridge in which the intrados is the arc of a circle.
a1878 G. G. Scott Lect. Mediæval Archit. (1879) II. 141 We have hitherto supposed our arches to be of moderate depth from extrados, or outer line, to intrados, or inner line.
This entry has not yet been fully updated (first published 1900; most recently modified version published online December 2021).
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n.1772