interstitial space

interstitial space (plural interstitial spaces)

1. An in-between space.
   1. (by extension) (architecture) The gaps between buildings/floors in architecture, used for systems and movement; the neglected or overlooked spaces between built structures, like alleys, courtyards, or empty lots.
   2. (by extension) (anatomy) The fluid-filled area between cells in tissues (interstitium).
   3. (by extension) (sociology) The informal, transitional zones where people from different groups or fields (e.g., hobbyists, professionals) interact.

• sense 1: 1980. Katz, M.A. "Interstitial space - the forgotten organ". National Library of Medicine.
• sense 2: 2022. "Interstitial Spaces and Public Life, the Overlooked Interventions that Weave our Built Environment". Arch Daily.

• Appendix:Liminal spaces