absorption line

noun

Definition of absorption line

: a dark line in an absorption spectrum

Examples of absorption line in a Sentence

Recent Examples on the Web Instead, proof could arrive in the form of very distinct spectroscopic features—particularly an absorption line at 450 nanometers within the visible portion of the electromagnetic spectrum. Shannon Hall, Scientific American, "Water on Europa—with a Pinch of Salt," 12 June 2019 The most prominent absorption lines of hydrogen and ionized oxygen are at very short wavelengths, in the ultraviolet and X-ray portions of the spectrum. Quanta Magazine, "A Short History of the Missing Universe," 19 Sep. 2018 The precise shape of the absorption line also matches that seen in hydrogen, as the researchers report today in Nature. Adrian Cho, Science | AAAS, "Atoms and antiatoms haven’t crashed Albert Einstein’s theory of relativity—yet," 4 Apr. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'absorption line.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of absorption line

1861, in the meaning defined above

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The first known use of absorption line was in 1861

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Cite this Entry

“Absorption line.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/absorption%20line. Accessed 20 Sep. 2020.

More from Merriam-Webster on absorption line

Britannica.com: Encyclopedia article about absorption line

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