interstitial

In reference to the extracellular spaces within a tissue or organ, excluding body cavities or potential spaces (peritoneal, pleural or pericardial cavities).

Related

interstitial cystitis interstitial lung disease; diffuse parenchymal lung disease (DPLS, ILD) interstitial nephritis interstitial space (fluid)

References

Stedman's Medical Dictionary 27th ed, Williams & Wilkins, Baltimore, 1999