> as lemmas
plano-cylindrical
plano-cylindrical adj.
Brit. 
/ˌpleɪnə(ʊ)sᵻˈlɪndrᵻkl/
, /ˌpleɪnə(ʊ)sᵻˈlɪndrᵻkl/U.S. /ˌpleɪnoʊsəˈlɪndrək(ə)l/
flat on one side and of a cylindrical form on the other./ˌpleɪnoʊsəˈlɪndrək(ə)l/ΘΚΠ
the world > space > shape > curvature > curved three-dimensional shape or body > cylinder > [adjective] > half of cylinder
plano-cylindrical1712
semi-cylindrical1731
semicylindric1760
hemicylindrical1854
1712 Proposals for printing Treat. Art of Political Lying 7 He supposes the Soul to be of the Nature of a Plano-Cylindrical Speculum..; that the plain side was made by God Almighty, but that the Devil afterwards wrought the other side into a Cylindrical Figure.
1847 Philos. Trans. (Royal Soc.) 137 73 The combination of two plano-cylindrical glass lenses, as used in obtaining the register fig. 8, Plate IX., is here represented.
1964 S. Duke-Elder Parsons' Dis. Eye (ed. 14) vii. 74 The streak effect is obtained by using a plano-cylindrical retinoscopy mirror or a similarly adjusted electric retinoscope.
<
as lemmas