concavoconvex

[kon-key-voh-kon-veks]

con·ca·vo-con·vex

[kon-key-voh-kon-veks]
adjective
1.
Also, convexo-concave. 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.

Origin:
1670–80; < Latin concav(us) + -o- + convex
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Concavoconvex is always a great word to know.
So is callithumpian. Does it mean:
a printed punctuation mark (‽), available only in some typefaces, designed to combine the question mark (?) and the exclamation point (!), indicating a mixture of query and interjection, as after a rhetorical question.
a children's mummer's parade, as on the Fourth of July, with prizes for the best costumes.
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