noun
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'.
食道裂孔ヘルニアは、胃の一部が横隔膜の裂孔を通って胸腔に突出する状態です。
A hiatal hernia is a condition where part of the stomach protrudes into the chest cavity through the esophageal hiatus of the diaphragm.
クモの外骨格
The exoskeleton of spiders has sensory organs called lyrifissures.