noun, noun which may take the genitive case particle 'no'
Technical term often used in contexts like accounting, engineering, and product specifications, especially in the phrase 耐用年数 (useful life).
See also: 耐用年数
この機械の耐用年数は10年です。
The useful life of this machine is 10 years.
耐用性の高い素材
We chose a material with high durability.