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Definition of "angstrom" [angstrom]

  • A unit of length equal to one hundred-millionth (10-8) of a centimeter, used especially to specify radiation wavelengths. Also called angstrom unit. See Table at measurement. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

Use "angstrom" in a sentence
  • "(An angstrom is one ten-billionth of a meter, the approximate diameter of a single atom.)"
  • "TEAM 0.5 is capable of producing images with a resolution of one-half angstrom, which is less than the diameter of a single hydrogen atom."
  • "In science news: I recently used the word "angstrom" in a humorous context, and many people laughed, and some people sneered (mostly engineers), and the wonderful Melissa Evans just gave me the facts, ma'am:"