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
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005

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.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
Other non-specific cysts like choroid fissural cyst, choroid plexus and ganglioglioma showed no specific metabolite peak.
De fato, os becos se configuram como um espaco fissural que, em algumas situacoes, nos remetem a um canyon ou o interior de uma floresta tropical, cujos feixes de luz entram a partir de brechas deixadas entre as tendas dos ambulantes erguidas ao longo do trajeto.
Fissural cyst hydatid was thought in differential diagnosis, but the test for ecchinococcus IHA was negative.
A chest CT showed a roughly 1.3 cm-sized, well-defined nodule with surrounding ground glass appearance in addition to a 0.6 cm-sized, well-defined nodule with interlobar fissural thickening in the right upper lobe and lower lobe, respectively (Figs.
The Guacamayas volcanic rocks are post-orogenic and fissural, partially subaquatic.
Although none of these findings are specific, the combination of poorly defined nodules, fissural nodularity and a bronchovascular distribution of perihilar opacities on CT is highly suggestive of pulmonary KS [29].