: a unit of length equal to one ten-billionth of a meter
Examples of angstrom in a Sentence
Recent Examples on the Web
Because of the angstrom-size pores in the material, the team discovered that UC-MAC was uniquely suited to turning molecular hydrogen ions into protons.
—
IEEE Spectrum, 18 Aug. 2025
This is the smallest number of any chip yet; 18A means 18 angstroms, an angstrom being one ten-billionth of a meter.
—Geoff Colvin, Fortune, 12 Oct. 2024
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
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
IEEE Spectrum, 18 Aug. 2025
This is the smallest number of any chip yet; 18A means 18 angstroms, an angstrom being one ten-billionth of a meter.
—Geoff Colvin, Fortune, 12 Oct. 2024
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
Cite this Entry
“Angstrom.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/angstrom. Accessed 5 Sep. 2025.
Copy CitationKids Definition
angstrom
noun
ang·strom
ˈaŋ-strəm 
: a unit of length used especially of wavelengths (as of light) and equal to one ten-billionth of a meter
—abbreviation Å
Biographical Definition
Love words? Need even more definitions?
Merriam-Webster unabridged
Share