ang·​strom | \ ˈaŋ-strəm How to pronounce angstrom (audio) also ˈȯŋ- How to pronounce angstrom (audio) \

Definition of angstrom

: a unit of length equal to one ten-billionth of a meter

Examples of angstrom in a Sentence

Recent Examples on the Web In the best cases, researchers can now make maps with resolutions below 2 angstroms, putting cryo-EM on par with crystallography. Eric Hand, Science | AAAS, 23 Jan. 2020 The technique allowed them to see Zika at a resolution of just 3.1 angstroms. Jaclyn Jeffrey-wilensky, STAT, 26 June 2018 Gaps between the probes measure a mere 100 angstroms – roughly the space occupied by 66 hydrogen molecules – which requires the manufacturing process to be perfect, lest a researcher end up looking at the wrong probe. Brian Alexander, WIRED, 1 June 2000

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

First Known Use of angstrom

1881, in the meaning defined above

History and Etymology for angstrom

Anders J. Ångström

Learn More About angstrom

Time Traveler for angstrom

Time Traveler

The first known use of angstrom was in 1881

See more words from the same year

Dictionary Entries Near angstrom




See More Nearby Entries 

Statistics for angstrom

Cite this Entry

“Angstrom.” Dictionary, Merriam-Webster, Accessed 25 May. 2022.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon

More Definitions for angstrom


ang·​strom | \ ˈaŋ-strəm also ˈȯŋ- \

Medical Definition of angstrom

: a unit of length equal to one ten-billionth of a meter

Ångström biographical name

Ång·​ström | \ ˈaŋ-strəm How to pronounce Ångström (audio) , ˈȯŋ- \

Definition of Ångström

Anders Jonas 1814–1874 Swedish physicist

More from Merriam-Webster on angstrom Encyclopedia article about angstrom


Test Your Vocabulary

Which Word Does Not Belong?

  • one green toy robot amidst many red toy robots
  • Which of these words does not mean "nonsense"?
Name That Thing

Test your visual vocabulary with our 10-question challenge!

Universal Daily Crossword

A daily challenge for crossword fanatics.

Love words? Need even more definitions?

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