hardness Hear it!

hardness definition

hard·ness (härd′nis)

noun

  1. the state or quality of being hard (in various senses)
  2. the relative capacity of a substance for scratching another or for being scratched or indented by another

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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