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[hahy-ey-tuh s] /haɪˈeɪ təs/
noun, plural hiatuses, hiatus.
a break or interruption in the continuity of a work, series, action, etc.
a missing part; gap or lacuna:
Scholars attempted to account for the hiatus in the medieval manuscript.
any gap or opening.
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.
Anatomy. a natural fissure, cleft, or foramen in a bone or other structure.
Origin of hiatus
1555-65; < Latin hiātus opening, gap, equivalent to hiā(re) to gape, open + -tus suffix of v. action
Related forms
hiatal, adjective
3. break, interval, space. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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Examples from the Web for hiatus
Contemporary Examples
Historical Examples
  • Of course the reason for the hiatus in the books was plain enough.

    The Portygee Joseph Crosby Lincoln
  • No copies were retained, so there is a hiatus in the record.

    Personal Recollections of a Cavalryman J. H. (James Harvey) Kidd
  • And yet his experience told him 205 that there must be some rift, some hiatus in the scheme.

    The Crevice

    William John Burns and Isabel Ostrander
  • The Composer, however, observed the hiatus, and directed the insertion of two rests.

    The Shadow World

    Hamlin Garland
  • Then he covered the hiatus with paint, and hoisted the ensign to the flagstaff.

    The Wreck of the Titan Morgan Robertson
British Dictionary definitions for hiatus


noun (pl) -tuses, -tus
(esp in manuscripts) a break or gap where something is missing
a break or interruption in continuity
a break between adjacent vowels in the pronunciation of a word
(anatomy) a natural opening or aperture; foramen
(anatomy) a less common word for vulva
Derived Forms
hiatal, adjective
Word Origin
C16: from Latin: gap, cleft, aperture, from hiāre to gape, yawn
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for hiatus

1560s, "break or opening in a material object," from Latin hiatus "opening, aperture, rupture, gap," from past participle stem of hiare "to gape, stand open" (see yawn (v.)). Sense of "gap or interruption in events, etc." is first recorded 1610s.

Online Etymology Dictionary, © 2010 Douglas Harper
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hiatus in Medicine

hiatus hi·a·tus (hī-ā'təs)
n. pl. hiatus or hi·a·tus·es

  1. An aperture or fissure in an organ or a body part.

  2. A foramen.

hi·a'tal adj.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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