noun
training period; residency; internship
Refers to a defined period of practical training, often in a professional setting. Especially common for medical residency, but also used in corporate or vocational contexts.
新入社員の研修期間は三ヶ月です。
The training period for new employees is three months.
彼は研修期間を終えて、正式に医師として働き始めた。
After completing his residency, he officially began working as a doctor.
Compound of 研修 (training) + 期間 (period).