interstitial

/ˌɪntərˈstɪʃəl/
adjective
  1. Relating to or situated in the small spaces or gaps between things, especially in body tissues or other structures.
    • The doctor explained that interstitial lung disease affects the tissue between the air sacs.
    • Interstitial spaces in the soil allow water and air to reach plant roots.
    • Interstitial fluid surrounds the cells and helps deliver nutrients.
  2. Relating to short breaks or gaps in a schedule, broadcast, or sequence.
    • She filled the interstitial time with a quick warm-up exercise.
    • The TV channel shows interstitial ads between programs.
    • The conference had interstitial sessions for networking between talks.
noun
  1. A short piece of content, such as an advertisement or announcement, that appears between regular programs or segments.
    • During the live stream, an interstitial reminded viewers to subscribe.
    • The network aired a brief interstitial promoting the upcoming movie.
    • The radio station played an interstitial with the weather update.
What does "interstitial" mean? | whatsthatwordmean | whatsthatwordmean