absorption line


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.

See More

First Known Use of absorption line

1861, in the meaning defined above

Keep scrolling for more

Learn More about absorption line

Time Traveler for absorption line

Time Traveler

The first known use of absorption line was in 1861

See more words from the same year

Statistics for absorption line

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

Comments on absorption line

What made you want to look up absorption line? Please tell us where you read or heard it (including the quote, if possible).


Test Your Vocabulary

Homophone Quiz

  • three bears two of them look like theyre whispering to a third bear who looks chuffed to be the center of attention
  • In order to judge how people felt, the senator's office hired a firm to take a ______.
Spell It

Can you spell these 10 commonly misspelled words?

Syn City

Test Your Knowledge - and learn some interesting things along the way.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!