I measured therefore the thickness of this concavo-convex Plate of Glass, and found it every where 1/4 of an Inch precisely.
When a concavo-convex plate is affixed to the outside of the cubit.
Grain is orbicular to ovate, concavo-convex, red-brown, and transversely rugose.
They are neat, moderately thin, concavo-convex disks, with smooth surfaces and rounded edges.
Grain is oblong, obtusely trigonous, or concavo-convex, red-brown and rugulose on the ventral side.
concavo-convex: hollowed out or concave on one surface, rounded or convex on the other; like a small segment of a hollow sphere.
Winglets: small, concavo-convex scales, generally fringed at tip, under the base of the elytra in Dytiscidae.
F is called a meniscus, or concavo-convex, being concave on one, and convex on the other side.
Other types employ two plano-convex lenses, the curved surfaces nearly in contact; or a concavo-convex and a plano-convex lens.
concavo-convex con·ca·vo-con·vex (kŏn-kā'vō-kŏn-věks')
Of or being concave on one surface and convex on the opposite surface.