porosity Hear it!

porosity definition

po·ros·ity (pō räs′ə tē, pə-)

noun pl. porosities -·ties

  1. the quality or state of being porous
  2. the ratio, usually expressed as a percentage, of the volume of a material's pores, as in rock, to its total volume
  3. anything porous
  4. pore

Etymology: ME porositee < ML porositas: see porous + -ity

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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