Complex sentence: The Frenkel defect is a type of defect shown by crystalline solids wherein an atom is displaced its lattice position to an interstitial site, creating a vacancy at the original site and an interstitial defect at the new location.
Split into simpler sentences: The Frenkel defect is a type of defect shown by crystalline solids. It consists in the displacement of an atom from its lattice position to an interstitial site, creating a vacancy at the original site and an interstitial defect at the new location.