correct meditative activity; right practice
In Jodo (Pure Land) Buddhism, specifically the practice of reciting the name of Amitabha Buddha (nembutsu) as the primary meditative act leading to birth in the Pure Land.
In the Jodo sect, the nembutsu is regarded as the correct meditative activity.
From 正 (correct) + 定 (meditative concentration) + 業 (karma, action). A technical term in Jodo Buddhism.