hydraulic head; water head; piezometric head
Civil engineering term for the potential energy of water per unit weight, measured as a height. Used in hydraulics and groundwater flow.
Archaic term for the area beside a body of water. Not used in modern Japanese; replaced by words like 水辺 (みずべ) or 岸 (きし).
In dam design, it is necessary to accurately calculate the hydraulic head.
Groundwater flow occurs due to differences in hydraulic head.
In old documents, the expression 'standing at the water's edge' can be found.
hydrocephalus
Compound of 水 (water) and 頭 (head). The civil engineering sense is a direct translation of the English term 'hydraulic head'. The archaic waterside sense likely derives from the idea of the 'head' or edge of the water.