point source

noun

1
: a source of radiation (such as light) that is concentrated at a point and considered as having no spatial extension
2
: an identifiable confined source (such as a smokestack or wastewater treatment plant) from which a pollutant is discharged or emitted

Examples of point source in a Sentence

Recent Examples on the Web The musical magic—incredible coherency and speed—comes from the transducers being concentrically configured such that the frequencies from 250 Hz to 100 kHz (well beyond audibility) are delivered as if from a single point source. Robert Ross, Robb Report, 3 July 2024 But Salvato said her organization examined point sources that could have caused the increase and didn't find any answers. Madeline Heim, Journal Sentinel, 9 Jan. 2024 That light was also possibly from a single point source, such as a star, rather than a fuzzy galaxy, says Paulin, who is now a graduate student at the University of Pennsylvania. Stephanie Pappas, Scientific American, 20 July 2023 Methane spewing from major US landfills is on average 40% greater than reported, according to a new study published in Science in which scientists used aerial surveys to identify point source emissions from hundreds of waste sites. Aaron Clark, Fortune, 30 Mar. 2024 See all Example Sentences for point source 

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'point source.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1894, in the meaning defined at sense 1

Time Traveler
The first known use of point source was in 1894

Dictionary Entries Near point source

Cite this Entry

“Point source.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/point%20source. Accessed 26 Jul. 2024.

Last Updated: - Updated example sentences
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