noun, noun which may take the genitive case particle 'no'
lower abdomen; hypogastric region
Anatomical term referring to the area below the navel. Often used in medical or formal contexts.
If you feel pain in the lower abdomen, consult a doctor immediately.
臍下部にしこりがある。
There is a lump in the hypogastric region.
pit of the stomach; lower abdomen; tanden
From 臍 (navel) + 下 (below). The reading せいか is the on'yomi of the characters.