focal point
Americannoun
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focal points
plural
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Also called principal focus. Optics. either of two points on the axis of a mirror, lens, or other optical system, one point being such that rays diverging from it are deviated parallel to the axis upon refraction or reflection by the system and the other point being such that rays parallel to the axis of the system converge to the point upon refraction or reflection by the system.
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the point at which all elements or aspects converge; center of activity or attention.
The focal point of our discussion was the need for action.
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the central or principal point of focus.
noun
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Also called: principal focus, focus. the point on the axis of a lens or mirror to which parallel rays of light converge or from which they appear to diverge after refraction or reflection
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a central point of attention or interest
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The point at which all radiation coming from a single direction and passing through a lens or striking a mirror converges.
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Also called focus
Other Word Forms
Noun Inflected Forms
Etymology
Origin of focal point
First recorded in 1705–15
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Our study also reveals how the ridge of Oued Beht would become a focal point again in the medieval period, during the 11th to 13th centuries AD.
From Science Daily ● Oct. 31, 2026
The expansive island provides additional preparation space while serving as a focal point for the kitchen’s sleek design.
From MarketWatch ● Oct. 29, 2026
The week-long demonstrations have badly damaged several government buildings, including the education ministry, which remains a focal point.
From Barron's ● Oct. 20, 2026
The third, on “I’m Doun for Lack o’ Johnnie,” is the emotional focal point of the Fantasy, a lament both intimate and universal.
From The Wall Street Journal ● Oct. 16, 2026
The focal point of this letter is to thank you for the photo session with the photographer and obtain information from you how I can obtain a good amount of photos.
From "Just Mercy" by Bryan Stevenson
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