focal point

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.

focal point

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

focal point

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

Word History and Origins

Origin of focal point¹

First recorded in 1705–15

Example Sentences

“He’s going to be the focal point of their offense and it’s just a huge challenge.”

From Los Angeles Times

There was little fanfare from the stands when the free agent arrived at Parkhead, but he proved his worth in Belgrade by offering Celtic a focal point and Rodgers an option.

From BBC

Prosecutors described one of the defendants Lee Robinson from Caerau, Cardiff, as an "aggressive focal point" of the riot.

From BBC

Sammy McDonald was the last student due to debate with him, and the US support of Israel's campaign in Gaza was a focal point of their discussion.

From BBC

From here, the colors that become the focal point are bright, airy mixes of pastels, which highlight the beauty in all of our differences and ranges of knowledge.

From Los Angeles Times

Related Words

• center of attention www.thesaurus.com
• centerpiece