noun
salt water; brine; brackish water
Refers to water containing salt, often contrasted with 淡水 (fresh water). Can be used for seawater, brine, or brackish water.
See also: 淡水
この池は鹹水で、淡水魚は住めない。
This pond is salt water, so freshwater fish cannot live in it.
鹹水を淡
Technology for desalinating salt water is advancing.
Compound of 鹹 (kan, 'salty') and 水 (sui, 'water'). The kanji 鹹 is rare and not in common use.