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Meaning of interstitial

in•ter•sti•tial

Pronunciation: (in"tur-stish'ul), [key]
— adj.
  1. pertaining to, situated in, or forming interstices.
  2. situated between the cells of a structure or part: interstitial tissue.
—n.
  1. an imperfection in a crystal caused by the presence of an extra atom in an otherwise complete lattice. Cf. vacancy (def. 6).
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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