cylindroidn.
/ˈsɪlɪndrɔɪd/ 1. A figure resembling a cylinder; spec. one on an elliptical base, an elliptic cylinder.
ΘΚΠ
the world > space > shape > curvature > curved three-dimensional shape or body > cylinder > [noun] > cylindrical object > cylindroid
cylindroid1663
1663 M. Dary Let. in S. P. Rigaud & S. J. Rigaud Corr. Sci. Men 17th Cent. (1841) (modernized text) I. 99 I call them cylindroids (by which I mean) a solid contained under three surfaces.
1704 J. Harris Lexicon Technicum I Cylindroid, is a Solid Figure with Elliptical Bases, parallel, and alike situated.
a1878 G. G. Scott Lect. Mediæval Archit. (1879) I. 239 That the vaulting surfaces should be portions of cylinders or regular cylindroids.
2. A conoidal cubic surface of fundamental importance in the theory of screws and complexes.
ΚΠ
1871 R. S. Ball Theory of Screws in Trans. Royal Irish Acad.: Sci. 24
This entry has not yet been fully updated (first published 1893; most recently modified version published online June 2018).
cylindroidadj.
/sɪˈlɪndrɔɪd//ˈsɪlɪndrɔɪd/ Resembling a cylinder; somewhat cylindrical in form.
ΘΚΠ
the world > space > shape > curvature > curved three-dimensional shape or body > cylinder > [adjective] > cylindroid
cylindroid1839
cylindroidal1844
1839–47 Todd's Cycl. Anat. & Physiol. III. 627/1 A cylindroid body.
1847–9 Cycl. Anat. & Physiol. IV. 499/1 The bodies of the spermatozoa are..frequently..cylindroid.
This entry has not yet been fully updated (first published 1893; most recently modified version published online June 2022).
<
n.1663
adj.1839