noun
simple hot spring
Technical term for a hot spring with less than 1,000 ppm of dissolved minerals. Also called 単純泉.
See also: 単純泉
この地域の温泉は単純温泉で、肌に優しいと言われています。
The hot springs in this area are simple hot springs and are said to be gentle on the skin.
Synonym; shorter form of 単純温泉, used in the same technical context.
Compound of 単純 (simple) and 温泉 (hot spring), reflecting the low mineral content.