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principal point

American  

noun

Optics.
  1. the point where a principal plane intersects the axis.


Etymology

Origin of principal point

First recorded in 1695–1705

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.

Rather than seeing records as marketing adjuncts to concert tours, he showed that recordings could be the principal point of contact — in his case, the only point — between musicians and their fans.

From Los Angeles Times • Apr. 9, 2024

His principal point is that the power of the real-estate state flows from the dynamic between development and the profession of city planning.

From The New Yorker • Nov. 20, 2019

Starr takes us on a tour of Whitewater, and though it once was the principal point of his inquiry, it now is largely beside the point.

From Washington Post • Sep. 20, 2018

"However, what no player should expect is that his head will be picked and made the principal point of contact on such a hit."

From Reuters • Nov. 29, 2011

Diversion, di-vėr′shun, n. act of diverting or turning aside: that which diverts: amusement, recreation: something done to turn the attention of an enemy from the principal point of attack.

From Chambers's Twentieth Century Dictionary (part 1 of 4: A-D) by Various

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