CONFOCAL

Etymology

Adjective

confocal (not comparable)

(optics, mathematics) Having the same foci

Noun

confocal (plural confocals)

Any of a pair of confocal mirrors or lenses

Source: Wiktionary


Con*fo"cal, a. (Math.)

Definition: Having the same foci; as, confocal quadrics.

Source: Webster’s Unabridged Dictionary 1913 Edition



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Word of the Day

23 February 2025

BARGAIN

(noun) an advantageous purchase; “she got a bargain at the auction”; “the stock was a real buy at that price”


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Coffee Trivia

According to WorldAtlas, Canada is the only non-European country to make its top ten list of coffee consumers. The United States at a distant 25 on the list.

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