1) A minute gap between the adjacent parts of a body or
objects close together.
2) In a crystal lattice, the empty space between adjacent atoms.
The interstices are of two types: Tetrahedral-interstices and
Octahedral-interstices. Also called
→ interstitial site.
From L. interstitium "space between; interval," from
intersistere, from → inter- "between," +
stem of stare "to stand," cognate with Pers. istâdan,
Andarjâ, literally "a place between," from andar "between,"
→ inter-, + jâ, → place.