noun

fissure

FIHSH-uh

noun

A long, narrow crack or split, especially in rock, ground, or body tissue.

"A deep fissure had opened in the volcanic rock."

"The dentist noticed a small fissure in the patient's gum."

A serious disagreement or split between people or groups.

"The scandal caused a fissure within the political party."

verb

To crack or split apart.

"The clay fissured as it dried in the sun."

How to Use Fissure

Learner’s notes

In plain EnglishA crack or split — literal (in rock, skin, or earth) or figurative (a rift between people).

Common pairings

a deep fissure anal fissure fissure in the rock

fissured past tense, fissures plural, fissures singular

Study it as flashcards or scroll it in Flow — saved to your collection.

Can you complete this real example?

A deep _____ had opened in the volcanic rock.

From Latin fissura, "a cleft or crack," from findere, "to split" — related to "fission."

pure cure sure lure Kure azure nature future manure secure impure injure