interstitial adj
1 of or relating to an interstice or interstices
2 (Physics) forming or occurring in an interstice
an interstitial atom
3 (Chem) containing interstitial atoms or ions
an interstitial compound
4 (Anatomy, zoology) occurring in the spaces between organs, tissues, etc.
interstitial cells
n
5 (Chem) an atom or ion situated in the interstices of a crystal lattice
♦
interstitially adv
interstitial-cell-stimulating hormone n another name for →
luteinizing hormone