A hernia of the abdominal wall or an abdominal tumor.
From Greek koilia (belly) + Latin nux (lump, knot). This term describes an outward swelling or protrusion in the abdominal region.
The word 'nux' literally means 'knot'—so a celionucus is like a knotted lump pushing out from your belly, which is exactly what a hernia looks like!
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