absolute magnitude

noun

: a measure of the intrinsic luminosity of a celestial body (such as a star) expressed as the apparent magnitude the body would have if viewed from a distance of 10 parsecs

Examples of absolute magnitude in a Sentence

Recent Examples on the Web
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However, the absolute magnitude of the differences in charges is staggering, often thousands and sometimes tens of thousands of dollars. Joshua P. Cohen, Forbes.com, 1 Apr. 2026

Word History

First Known Use

1885, in the meaning defined above

Time Traveler
The first known use of absolute magnitude was in 1885

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Cite this Entry

“Absolute magnitude.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/absolute%20magnitude. Accessed 1 May. 2026.

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