turning point (in something) the time when an important change takes place, usually with the result that a situation improves The promotion marked a turning point in her career.Extra examples It marks a great turning point in your lives. The election represented a major turning point in American history. The industrial revolution was a major historical turning point. The process of disarmament is at a crucial turning point. The turning point came when reinforcements arrived from the south. This win could prove to be a historic turning point in the fortunes of the team. This win could prove to be a historic turning point= one that will be remembered in the fortunes of the team. That game was a turning point for the team.