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''fissure'' ▫ᴱᴺ|Definition|1st|20260606185347-00-⌔

fissure - Wiktionary, the free dictionary

English

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Noun

fissure (plural fissures)

  • A long, narrow crack or opening made by breaking or splitting, especially in rock or earth.
    • ✤ Hyponym: microfissure
    • After Miller’s Dale Junction, the main Derby-Manchester line crosses the Wye for the last time and turns north-west up Great Rocks Dale, a natural fissure several miles long.1
  • (anatomy) A groove, deep furrow, elongated cleft or tear between body parts or in the substance of an organ.
    • ✤ Hyponyms: anal fissure, anterior median fissure, longitudinal fissure, orbital fissure, palpebral fissure, Rolandic fissure, sylvian fissure
    • ✤ Coordinate terms: fossa, fovea, sulcus, cleft, lacuna, vallecula
  • (anatomy) A break or slit in tissue usually at the junction of skin and mucous membrane.
  • A state of incompatibility or disagreement.
    • ✤ Synonym: schism

Verb

fissure (third-person singular simple present fissures, present participle fissuring, simple past and past participle fissured)

  • To split, forming fissures.

Etymology

From Middle English fissure, from Old French fissure, from Latin fissūra (“a cleft, chink”), from findō (“to cleave, split, divide”) +‎ -tūra (nominal suffix).

Pronunciation

  • (Received Pronunciation) IPA: /ˈfɪʃ.ə/
  • Audio (Southern England): 🔊
  • (General American) IPA: /ˈfɪʃ.ɚ/, /ˈfɪʒ.ɚ/
  • Homophones: Fischer, Fisher, fisher, phisher
  • Rhymes: -ɪʃə(ɹ)

Printed 2026-06-28.

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Footnotes

  1. 1960 April, J. P. Wilson, E. N. C. Haywood, “The route through the Peak—Derby to Manchester: Part Two”, in Trains Illustrated, page 224:

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