[in.ter.stice] n, pl -stic.es [ME, fr. L interstitium, fr. inter- + -stit-, -stes standing (as in superstes standing over)--more at superstition] (15c) 1 a: a space that intervenes between things; esp: one between closely spaced things b: a gap or break in something generally continuous "the ~s of society" "passages of genuine literary merit in the ~s of the ludicrous ... plots --Joyce Carol Oates"
2: a short space of time between events