裂孔
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Meanings
1
Medical term for a natural opening or fissure in the body, especially the esophageal hiatus of the diaphragm. Also used for lyriform fissures in arachnids. Not a general word for 'hole'.
A hiatal hernia is a condition where part of the stomach protrudes into the chest cavity through the esophageal hiatus of the diaphragm.
The exoskeleton of spiders has sensory organs called lyrifissures.