concavo-convex

American  

[kon-key-voh-kon-veks] / kɒnˈkeɪ voʊ kɒnˈvɛks /

adjective

1. Also concave on one side and convex on the other.

2. Optics. pertaining to or noting a lens in which the concave face has a greater degree of curvature than the convex face.

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concavo-convex British  

adjective

1. having one side concave and the other side convex

2. (of a lens) having a concave face with greater curvature than the convex face Compare convexo-concave

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Etymology

Origin of concavo-convex

1670–80; < Latin concav ( us ) + -o- + convex

Example Sentences

By these it is seen that a double-convex lens tends to condense the rays of light to a focus, a double-concave to scatter them, and a concavo-convex combines both powers.

From American Hand Book of the Daguerreotype by Humphrey, S. D. (Samuel Dwight)

High overhead, like a gigantic awning, was the slightly concavo-convex main aeroplane, tilted towards the front at an imperceptible angle, and stretched taut.

From Encyclopaedia Britannica, 11th Edition, Volume 10, Slice 5 "Fleury, Claude" to "Foraker" by Various

"Why do you weep?" he asked, peering at the Boy through his concavo-convex Nose Glasses.

From Fables in Slang by Newman, Clyde J.

The coins of these two Greek states in particular were for a long period concavo-convex disks, the convex side being in all instances the obverse.

From The New England Magazine Volume 1, No. 6, June, 1886, Bay State Monthly Volume 4, No. 6, June, 1886 by Various

These three distinct classes of harrows, the disk type, the curved spring tooth type, and gangs of sections of concavo-convex disks, particularly distinguish this class of implements from the old forms of previous ages.

From Inventions in the Century by Doolittle, William Henry