noun, noun or participle which takes 'suru', transitive verb, noun which may take the genitive case particle 'no'
waterproofing; making watertight
Refers to the process or state of making something resistant to water. Common in product descriptions and technical contexts.
この時計は防水加工が施されている。
This watch has been waterproofed.
地下室を防
Work to waterproof the basement has begun.