fissure

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Related to petrotympanic fissure: pterygoid canal, stylomastoid foramen

fissure

1. Anatomy a narrow split or groove that divides an organ such as the brain, lung, or liver into lobes
2. a small unnatural crack in the skin or mucous membrane, as between the toes or at the anus
3. a minute crack in the surface of a tooth, caused by imperfect joining of enamel during development

fissure

[′fish·ər]
(geology)
A high, narrow cave passageway.
An extensive crack in a rock.
(metallurgy)
A small cracklike discontinuity with a slight opening or displacement of the fracture surfaces.
References in periodicals archive ?
Additionally in relation to the TMJ-Middle ear bone communication (Huguier Channel) Marasa & Ham suggested that the inflammation produced by inflammatory disorders of TMJ can spread through the petrotympanic fissure to the middle ear and generate otitis media.
These components go through the petrotympanic fissure in the same form like the ligaments explained above.