Definition of "interstitial" []

• Relating to, occurring in, or affecting interstices. (adjective)
• Anatomy Relating to or situated in the small, narrow spaces between tissues or parts of an organ: interstitial cells; interstitial fluid. (adjective)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "The term interstitial cystitis for the syndrome is considered inappropriate as it indicates inflammation in the interstitum, which is often not present."
• "I can't predict what will happen with interstitial art, but it will continue to evolve (as I think it has for quite some time now, under the guise of other nomenclatures) and if "interstitial" is not the term that defines this particular kind of art-making in the future, that's fine."
• "I do think interstitial is about being "between" a variety of modes of category or operation, and I think what you're talking about could be described as interstitial activity, maybe, but I'm not sure to what purpose as of yet."