point defect


nounCrystallography.
  1. an imperfection in a crystal's lattice structure, either a missing atom or ion creating a vacancy in the lattice or an extra atom or ion between two normal lattice points creating an interstitial.

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British Dictionary definitions for point defect

point defect

noun
  1. an imperfection in a crystal, characterized by one unoccupied lattice position or one interstitial atom, molecule, or ion

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