boiling point
US /ˈbɔɪlɪŋ pɔɪnt/
UK /ˈbɔɪlɪŋ pɔɪnt/

1.
the temperature at which a liquid boils and turns to vapor
:
•
Water reaches its boiling point at 100 degrees Celsius.
•
The boiling point of alcohol is lower than that of water.
2.
the point at which one loses one's temper or self-control
:
•
His constant complaining finally reached my boiling point.
•
When he started insulting my family, I reached my boiling point.