focal point

American  

noun

1. 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.

2. 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.

3. the central or principal point of focus.

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focal point British  

noun

1. 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

2. a central point of attention or interest

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focal point Scientific  

1. The point at which all radiation coming from a single direction and passing through a lens or striking a mirror converges.

2. Also called focus

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Etymology

Origin of focal point

First recorded in 1705–15

Example Sentences

Miami tried to impose its game plan early, with several attacks down the right side of the field, and focused on making Messi the focal point of its attack.

From Los Angeles Times

Howe's decision to make Gordon the focal point of his attack instead of the misfiring Nick Woltemade paid off after just three minutes.

From Barron's

Long a community focal point, the five-acre park is set to undergo a redesign thanks to a $5-million donation from the Walt Disney Co., and a $5.5-million outlay from California State Parks.

From Los Angeles Times

These effects can shift steering angles, move focal points, and reduce spatial accuracy.

From Science Daily

One of the focal points in Freeside is the Atomic Wrangler, a multi-story casino and bar with lodging that was featured in “Fallout: New Vegas.”

From Los Angeles Times

Related Words

• center of attention
• centerpiece