noun
Refers to a decisive moment or event that changes the course of a situation, career, or life.
あの出会いが人生の転機になった。
That encounter became a turning point in my life.
会社は新製品の成功を転機に急成長した。
The company grew rapidly after the success of its new product marked a turning point.
Compound of 転 (turn, change) and 機 (opportunity, moment). The combination conveys a moment when circumstances turn or change significantly.