分岐

プログレッシブ和英中辞典(第4版)

ぶんき【分岐】

divergence

ここで線路が幹線から分岐する
Here the track diverges [branches off] from the trunk line.

そのころからこの言語がいくつかの方言に分岐し始めた
After that this language began to break up into several dialects.

分岐線

a branch (line)

分岐点

〔線路の〕a junction；〔十字路〕a crossroads

その駅は鉄道の分岐点だった
That station was located at a junction (point).／The tracks branched off in various directions at that station.

人生の分岐点に立っていた
He was standing at the 「turning point [crossroads] of his life.

出典　小学館「プログレッシブ和英中辞典(第4版)」