防水 (ぼうすい)waterproofing; making watertight

waterproofing; making watertightnoun (common) (futsuumeishi), noun or participle which takes the aux. verb suru

防水, its kanji, and other words that share them.Open this graph

Kanji in 防水

防衛ぼうえいdefense; defence
国防こくぼうnational defence; national defense
防止ぼうしprevention; check
防衛庁ぼうえいちょうJapan Defense Agency (became Ministry of Defense in January 2007)
予防よぼうprevention; precaution
攻防こうぼうoffense and defense; offence and defence
消防しょうぼうfire fighting
防災ぼうさいdisaster preparedness; prevention of damage resulting from a natural disaster
水みずwater (esp. cool, fresh water, e.g. drinking water)
水準すいじゅんlevel; standard
水道すいどうwater supply; water service
水面すいめんwater's surface
水俣病みなまたびょうMinamata disease
水泳すいえいswimming
水田すいでん(water-filled) paddy field
水産すいさんaquatic products; fisheries

See how 防水 connects to the rest of Japanese.