† semi-concaven.

Etymology: semi- prefix 2b(a).

Obsolete.

Applied to the half of a hollow cylinder bisected longitudinally. (See concave n. 1b.)

ΘΚΠ

the world > space > shape > curvature > curved surface > [adjective] > concave > of half of hollow cylinder

semi-concave1626

1626 F. Bacon Sylua Syluarum §131 As the Enclosure, that is Round about and Entire, preserueth the Sound; So doth a Semi-Concaue.

1734 Builder's Dict. II. B 7 A Semi-Concave-Cylinder.

This entry has not yet been fully updated (first published 1911; most recently modified version published online March 2021).

单词	semi-concave
释义	† semi-concaven. Etymology: semi- prefix 2b(a). Obsolete. Applied to the half of a hollow cylinder bisected longitudinally. (See concave n. 1b.) ΘΚΠ the world > space > shape > curvature > curved surface > [adjective] > concave > of half of hollow cylinder semi-concave1626 1626 F. Bacon Sylua Syluarum §131 As the Enclosure, that is Round about and Entire, preserueth the Sound; So doth a Semi-Concaue. 1734 Builder's Dict. II. B 7 A Semi-Concave-Cylinder. This entry has not yet been fully updated (first published 1911; most recently modified version published online March 2021). < n.1626
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