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

With a return to the capital next up against league leaders Arsenal, Liverpool will be praying for Ekitike to return on Thursday to offer a focal point.

From BBC

Simpson’s leadership has evolved steadily over the course of the season, becoming a focal point of Alabama’s offensive identity.

From Los Angeles Times

The Social Security Administration’s customer service has been a major focal point this year.

From MarketWatch

The Centre Point tower, at 101-103 New Oxford Street, has been a historic focal point for housing protests.

From BBC

The installation, unveiled on the Phoenix convention floor, recreated the site of Kirk’s death and quickly became a focal point for attendees, some of whom posed for photos and selfies inside the exhibit.

From Salon

Related Words

• center of attention
• centerpiece