noun, plural hi·a·tus·es, hi·a·tus.
1.a break or interruption in the continuity of a work, series, action, etc.
2.a missing part; gap or lacuna: Scholars attempted to account for the hiatus in the medieval manuscript.
3.any gap or opening.
4.Grammar, Prosody . the coming together, with or without break or slight pause, and without contraction, of two vowels in successive words or syllables, as in see easily.
5.Anatomy . a natural fissure, cleft, or foramen in a bone or other structure.