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
Recent Word Finds
Word of the Day
23 April 2025
UNMARRIED
(adjective) not married or related to the unmarried state; “unmarried men and women”; “unmarried life”; “sex and the single girl”; “single parenthood”; “are you married or single?”
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