Unpredictable, erratic or fickle; mercurial.
To overlay with quicksilver.
To treat with quicksilver.
The metal mercury.
An amalgam of mercury and tin applied to the backs of mirrors, quicksilvering.
Unpredictable.
Readily decomposable.
Not stable.
Radioactive, especially with a short half-life.
Fickle.
Having a strong tendency to change.
Fluctuating; not constant.
To release (an animal) from a stable.