1. the point at which one loses one’s temper; the point of crisis

1. You’ve just about pushed me to the boiling point. In a minute I’m going to lose my temper.

2. Don’t push the boss too hard about taking time off work. She hasn’t had much patience this week and it wouldn’t take much to reach her boiling point.

3. In 2024, tensions in space are poised to reach boiling point as the sector continues to expand.