PARFOCAL

Adjective

parfocal (not comparable)

Having multiple lenses that have corresponding focal points in the same plane.

Source: Wiktionary


Par*fo"cal, a. [Pari- + focal.] (Opt.)

Definition: With the lower focal points all in the same plane; -- said of sets of eyepieces so mounted that they may be interchanged without varying the focus of the instrument (as a microscope or telescope) with which they are used.

Source: Webster’s Unabridged Dictionary 1913 Edition



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Word of the Day

2 March 2025

LOITER

(verb) be about; “The high school students like to loiter in the Central Square”; “Who is this man that is hanging around the department?”


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Coffee Trivia

According to Guinness World Records, the largest coffee shop is the Al Masaa Café, which has 1,050 seats. The coffee shop was inaugurated in Riyadh, Saudi Arabia, on 13 August 2014.

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