as required   (TTS Sound)

The as_required has 1 Senses.

• pro re nata, prn, as required, as needed
• 臨機に, 必要であれば, 必要なときに, 必要に応じて
• according to need (physicians use PRN in writing prescriptions); "add water as needed"
• 必要に応じて（医師が処方を書く際に、PRNを使う）