interspace

from The Collaborative International Dictionary of English v.0.48

Interspace \In"ter*space`\, n. [L. interspatium. See {Inter-},
   and {Space}.]
   Intervening space. --Bp. Hacket.
   [1913 Webster]

from Moby Thesaurus II by Grady Ward, 1.0

35 Moby Thesaurus words for "interspace":
      caesura, clearance, discontinuity, dispart, distance between,
      double space, em space, en space, freeboard, hair space,
      half space, hiatus, interim, intermediate space, interruption,
      interstice, interval, jump, keep apart, lacuna, leap, leeway,
      make a space, margin, part, remove, room, separate, set apart,
      set at intervals, single space, space, space between, space out,
      time interval