1. A unit of length equal to one hundred-millionth of a centimeter (10-8 cm). Abbreviation, �.
    Source: Leet, L. Don. 1982. Physical Geology, 6th Edition. Englewood Cliffs, NJ: Prentice-Hall
     
  2. a. 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
    b. 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











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