fissure

1 of 2

noun

fis·​sure ˈfi-shər How to pronounce fissure (audio)
1
: a narrow opening or crack of considerable length and depth usually occurring from some breaking or parting
a fissure in the earth's crust
2
a
: a natural cleft between body parts or in the substance of an organ
b
: a break or slit in tissue usually at the junction of skin and mucous membrane
3
: a separation or disagreement in thought or viewpoint : schism
fissures in a political party

fissure

2 of 2

verb

fissured; fissuring

transitive verb

: to break into fissures : cleave

Examples of fissure in a Sentence

Noun a fissure in the Earth's crust a deep fissure in the ice
Recent Examples on the Web
Noun
Developers create fractures in hot, dry rock formations by drilling into or melting the rock, and then injecting water into the fissures. IEEE Spectrum, 29 Nov. 2023 The internal fissures mirrored the national debate within the party that some believe could imperil the reelection hopes of President Biden and the balance of power in Congress. Benjamin Oreskes, Los Angeles Times, 19 Nov. 2023 Support for the war remains high among the Israeli public, but a political fissure appeared to widen Thursday with calls for Netanyahu to step down. Sarah Dadouch, Washington Post, 16 Nov. 2023 Scientists suspect that the 2021 eruption kicked off a decades-long period of fissure eruptions across the peninsula; something similar happened 800 years prior. WIRED, 16 Nov. 2023 Until now, the eruptions were relatively small fissures in remote areas and posed little risk to people or infrastructure. Ragnhildur Sigurdardottir Bloomberg (wpns), arkansasonline.com, 14 Nov. 2023 Right now, within very different dramatic containers, two productions are bearing tragic witness to great fissures in justice itself — wounds that, old or new or ongoing, feel raw and deep, incompletely healed, if at all. Sara Holdren, Vulture, 8 Nov. 2023 The paths to the summit are becoming longer, as climbers have to go around risky cracks and fissures. Somini Sengupta, New York Times, 13 Sep. 2023 There are over 130 volcanoes here, as well as a variety of geysers and volcanic fissures. Timothy H.j. Nerozzi Fox News, Fox News, 18 Nov. 2023
Verb
Beginning with the backlash to the 2008 election of Barack Obama, Lowery examines how American society has fissured in the past 15 years, profiling the victims of white supremacy and the institutions that support it. CALIFORNIA, A SLAVE STATE, by Jean Pfaelzer. New York Times, 23 June 2023 The other stream of cultural anthropology will continue to evolve and fissure, as a thousand 'discourses' bloom. Razib Khan, Discover Magazine, 25 Feb. 2013 But where some teams fissure under the weight of unfulfilled expectations, going through that experience collectively made this group even tighter. Eric Walden, The Salt Lake Tribune, 5 June 2021 The statements made by Camille Locht and Jean-Paul Mira fed into a world already fissured by deep-rooted racial and economic discrimination. Gale Ure, Quartz Africa, 25 Apr. 2020 Even before Saturday’s major aftershock, which fissured more roads and prompted more landslides, Puerto Rico estimated damages from a 6.4-magnitude quake on Tuesday at $110 million. Patricia Mazzei, New York Times, 11 Jan. 2020 This land is made of igneous rock fissured with gold. Juliana Hanle, Scientific American, 18 Nov. 2019 See More

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'fissure.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

Etymology

Noun

Middle English, borrowed from Middle French & Latin; Middle French fissure, borrowed from Latin fissūra "splitting, crack, opening," from fissus, past participle of findere "to split, cleave" + -ūra -ure — more at bite entry 1

Verb

derivative of fissure entry 1

First Known Use

Noun

14th century, in the meaning defined at sense 1

Verb

1656, in the meaning defined at transitive sense

Time Traveler
The first known use of fissure was in the 14th century

Dictionary Entries Near fissure

Cite this Entry

“Fissure.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/fissure. Accessed 10 Dec. 2023.

Kids Definition

fissure

noun
fis·​sure
ˈfish-ər
1
: a narrow opening or crack
a fissure in rock
2
: a narrow natural space between body parts (as bones of the skull) or in the material making up an organ
fissure verb

Medical Definition

fissure

noun
1
: a natural cleft between body parts or in the substance of an organ: as
a
: any of several clefts separating the lobes of the liver
b
: any of various clefts between bones or parts of bones in the skull
c
: any of the deep clefts of the brain
especially : one of those located at points of elevation in the walls of the ventricles compare sulcus
2
: a break or slit in tissue usually at the junction of skin and mucous membrane
fissure of the lip
3
: a linear developmental imperfection in the enamel of a tooth

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