BIFOCAL

bifocal

(adjective) having two foci; “bifocal eyeglasses”

Source: WordNet® 3.1


Etymology

Adjective

bifocal (not comparable)

(optics) Having two focal lengths

(of a correcting lens) Divided into two parts, one of which corrects for distance vision and the other for near vision

Source: Wiktionary


Bi*fo"cal, a. [Pref. bi-+ focal.]

Definition: Having two foci, as some spectacle lenses.

Source: Webster’s Unabridged Dictionary 1913 Edition



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Word of the Day

29 April 2024

SUBDUCTION

(noun) a geological process in which one edge of a crustal plate is forced sideways and downward into the mantle below another plate


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Coffee Trivia

Coffee is a brewed drink prepared from roasted coffee beans, the seeds of berries from certain Coffea species. When coffee berries turn from green to bright red – indicating ripeness – they are picked, processed, and dried. Dried coffee seeds are roasted to varying degrees, depending on the desired flavor.

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