turning point noun

ADJ. crucial, major, real, significant | historic This win could prove to be a historic turning point (= one that will be remembered) in the fortunes of the team. | historical, political The industrial revolution was a major historical turning point (= a turning point in history).

VERB + TURNING POINT be, mark, prove (to be) | see sth as | reach In 1914 the world reached a turning point in its history.

TURNING POINT + VERB come The turning point came when reinforcements arrived from the south.

PREP. at a ~ The process of disarmament is at a crucial turning point. | ~ in