convexo-comb. form
/kənˌvɛksəʊkənˈvɛks/, /kənˌvɛksəʊˈkɒnvɛks/, U.S. /ˌkɑnˈˌvɛksoʊˌkɑnˈvɛks/, /kənˈˌvɛksoʊkənˈvɛks/, /ˌkɑnˈˌvɛksoʊˈkɑnˌvɛks/. In combination = Convexly, convex and ——, as in convexo-concave n. convex on one side and concave on the other, and thickest in the centre (cf. concavo-convex n. at concavo- comb. form ); of the form of a meniscus. convexo-convex n. convex on both sides. convexo-plane n. convex on one side, and flat on the other = planoconvex adj.
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the world > physical sensation > sight and vision > optical instruments > lens > [adjective] > types of lenses
convex?a1560
planoconvex1665
concavo-convex1677
convexo-concave1693
strong1732
aplanatic1799
periscopic1803
omphaloptic1819
polyzonal1823
shallow1837
first-order1846
periscopical1846
orthoscopic1853
rectilinear1874
overcorrected1875
sphero-cylindrical1881
wide-aperture1882
afocal1887
apochromatic1887
anastigmatic1890
telecentric1892
photovisual1899
aspherical1922
aspheric1923
multifocal1928
plano1944
demagnifying1959
society > occupation and work > materials > derived or manufactured material > glass and glass-like materials > [adjective] > shape of piece of glass
convexo-concave1693
scantling1726
the world > space > shape > curvature > curved surface > [adjective] > convex > concavo-convex
concavo-convex1677
convexo-concave1693
convex-concave1841
1693 E. Halley in Philos. Trans. (Royal Soc.) 17 961 Whether the Lens be..Plano-Convex or Plano-Concave, or Convexo-Concave.
a1727 I. Newton Opticks (1730) ii. iv. 287 Thick convexo-concave Plates of Glass, which are every where of the same thickness.
1815 J. Smith Panorama Sci. & Art I. 468 The use of a convexo-concave lens instead of the double convex.
This entry has not yet been fully updated (first published 1893; most recently modified version published online March 2022).
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comb. form1693