training camp; residential training; off-campus residential course
A training program where participants stay overnight at a facility, often used in corporate, educational, or organizational contexts.
The new employees will attend a residential training camp next month.
At the university's off-campus residential course, I interacted with students from other schools.
合宿 is a more general term for a group staying together for training or a shared activity, often in sports or clubs, while 宿泊研修 emphasizes a structured training or educational program with an overnight stay.
研修 is a broader term for training or study, not necessarily involving an overnight stay. 宿泊研修 specifies that the training includes lodging.
Compound of 宿泊 (lodging, overnight stay) and 研修 (training, study). The exact historical derivation is uncertain, but the word follows a common pattern for describing residential training programs.