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point source

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noun Physics, Optics.
a source of radiation sufficiently distant compared to its length and width that it can be considered as a point.
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Origin of point source

First recorded in 1900–05
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

How to use point source in a sentence

British Dictionary definitions for point source

point source

noun
optics a source of light or other radiation that can be considered to have negligible dimensions
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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