noun
semipermanent; semipermanence
Describes something that lasts a very long time but is not truly permanent. Often used in technical or commercial contexts (e.g., semipermanent data storage, semipermanent makeup).
このデータは半永久的に保存されます。
This data will be stored semipermanently.
半永久脱毛の効果は数
The effects of semipermanent hair removal are said to last several years.