fissure

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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.
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References in periodicals archive ?
CT scan of the head showed diffuse sulcal effacement, obliterated basal cisterns, and hyperdensity in the interhemispheric fissure suggestive of SAH (Figure 2).
Anoxic Brain Injury Presenting as Pseudosubarachnoid Hemorrhage in the Medical Intensive Care Unit
* Transfrontal: interhemispheric fissure, frontal cortex in front of lateral ventricles, orbita, sphenoid
The fetal brain
The impression of her head CT revealed a right subdural hematoma with mass effect and a blood interhemispheric fissure, which may have represented a subdural interhemispheric collection of subarachnoid blood.
TN: was hospital liable for patient's fall?: Court held nurse expert's testimony deficient

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