水を通さない (みずをとおさない) Japanese meaning | KotomoraMeanings
1
expression, i-adjective
impervious to water; waterproof; watertight
Describes materials, containers, or barriers that do not let water pass through. Often used attributively (e.g., 水を通さない素材).
さ
ない
容
器
に
入
れ
て
保
管
し
て
ください
。
Please store it in a watertight container.