scissure(n = noun.object) cleft, crack, crevice, fissure - a long narrow opening;
is a kind of gap, opening
has particulars: chap, chink, crevasse, fatigue crack, break, fault, faulting, fracture, geological fault, shift, rift, slit, split, vent, volcano

   A longitudinal opening in a body, made by cutting; a cleft; a fissure. Hammond. [1913 Webster]

N  interval, interspace, separation, break, gap, opening, hole, chasm, hiatus, caesura, interruption, interregnum, interstice, lacuna, cleft, mesh, crevice, chink, rime, creek, cranny, crack, chap, slit, fissure, scissure, rift, flaw, breach, rent, gash, cut, leak, dike, ha-ha, gorge, defile, ravine, canon, crevasse, abyss, abysm, gulf, inlet, frith, strait, gully, pass, furrow, abra, barranca, barranco, clove, gulch, notch, yawning gulf, hiatus maxime, hiatus valde deflendus, parenthesis, void, incompleteness, period, interim (time), with an interval, far between, breachy, rimose, rimulose, at intervals, longo intervallo.