CONCAVOCONVEX

Con*ca`vo-con"vex, a.

1. Concave on one side and convex on the other, as an eggshell or a crescent.

2. (Optics)

Definition: Specifically, having such a combination of concave and convex sides as makes the focal axis the shortest line between them. See Illust. under Lens.

Source: Webster’s Unabridged Dictionary 1913 Edition



RESET




Word of the Day

21 February 2025

RESTORATION

(noun) some artifact that has been restored or reconstructed; “the restoration looked exactly like the original”


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Coffee Trivia

In the 18th century, the Swedish government made coffee and its paraphernalia (including cups and dishes) illegal for its supposed ties to rebellious sentiment.

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