religious retreat; spiritual retreat
Used for organized retreats focused on spiritual training, prayer, or religious study, often in a Christian context but also applicable to other traditions.
See also: リトリート
I attended a church retreat and had a time of prayer in a quiet place.
Next month, a three-day spiritual retreat will be held at a mountain monastery.
Compound of 修養 (shūyō, 'self-cultivation; moral training') and 会 (kai, 'meeting; gathering'). The term likely arose in modern Japanese Christian communities to translate the concept of a religious retreat.