demi-circlen.
/ˈdɛmɪˌsəːk(ə)l/ 1. A semicircle. Now rare.
ΘΚΠ
the world > space > shape > curvature > roundness > [noun] > circularity > semicircularity > semicircle
semicircle1526
half-circle1552
hemicircle1603
hemicycle1603
demi-circle1654
semicirque1814
binant1938
1654 J. Evelyn Mem. (1857) I. 308 Mathematical and magical curiosities..a balance on a demi-circle.
1662 B. Gerbier Brief Disc. Princ. Building 2 How a Point, Line, Angle, Demi-circle..must be made.
1726 tr. J. Cavalier Mem. Wars Cevennes iii. 185 The Hill being in the form of a Demi-Circle.
1863 C. Boutell Man. Heraldry xxi. 290 A demi-circle of glory edged with clouds.
2. Surveying. An instrument of semicircular form used for measuring angles.
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1874 E. H. Knight Pract. Dict. Mech. Demi-circle..a modest substitute for the theodolite.
Derivatives
demi-ˈcircular adj. semicircular.
ΘΚΠ
the world > space > shape > curvature > roundness > [adjective] > circular > semicircular
semicircular?a1475
semicircled1590
hemicircular1656
half-round1662
semicirculatinga1700
demi-circular1821
1821 J. G. Lockhart Valerius I. ix. 146 The party might consist of about twenty, who reclined along one demi-circular couch.
This entry has not yet been fully updated (first published 1895; most recently modified version published online December 2020).
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