noun
long-term use; prolonged use; long-time service
Used for extended use of drugs, medical devices, equipment, or services over a long period. Often appears in medical, technical, or product contexts.
この薬の長期使用は副作用のリスクを高める可能性がある。
Long-term use of this medication may increase the risk of side effects.
長期使用に耐える丈夫な製品を開発した。
We developed a durable product that withstands long-term use.
Compound of 長期 (long-term) and 使用 (use). The meaning is transparent from its components.