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- Unit of measurement equal to 1/100,000,000 centimeter or 1/10,000 micron.
Source: Curtis, Helena. 1968. Biology. New York, NY. Worth Publishers
- A unit of length equal to one hundred-millionth of a centimeter (10-8 cm). Abbreviation, Å.
Source: Leet, L. Don. 1982. Physical Geology, 6th Edition. Englewood Cliffs, NJ: Prentice-Hall
- A unit of linear measurement in the centimeter-gram-second system. It equals 10-10 m, 10-8 cm, 10-4 mu m, or 10 -1 nm. Such ultramicroscopic distances as the dimensions of atoms, molecules, unit cells, and short wavelengths are expressed in angstroms. Webster 2nd; Webster 3rd
- Either of two units of wavelength: (1) 10-10 m, called the absolute angstrom; or (2) the wavelength of the red spectrum line of cadmium divided by 6,438.4696, which is called the international angstrom. Webster 3rd
Source: Dictionary of Mining, Mineral, and Related Terms