angstrom unit
- noun
- /ˈæŋstrəm ˈjuːnɪt/
- Specialized
:
unidad de ångström
- Scientists often measure the size of atoms in angstrom units for precision.
Examples
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Between 4,000 angstrom units and 7,800 angstrom units.
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Between 4,000 angstrom units and 7,800 angstrom units.
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The wavelength of light emitted by this laser is approximately 600 angstrom units.
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The spectrum of this star reveals radiation in the range of 400 to 700 angstrom units.
Synonyms
1
8.7
A very small unit of length equal to one ten-billionth of a meter
Surface Forms
Morphology
The phrase 'angstrom unit' is directly compositional: 'angstrom' names a specific measure and 'unit' signals a measurement quantity, so a learner who knows both constituents can infer it refers to the measurement unit equal to 0.1 nm. This head-modifier compound follows standard noun-composition patterns cross-linguistically, making the meaning predictable from its parts.
Etymology
Angstrom unit is named after Swedish scientist Anders Jonas Ångström, who measured the very small lengths of light and used the letter 'Å' to mark them. That's why the angstrom unit means 'a very small length' used for things like atoms and light.