americium
/ˌæməˈrɪsiəm/
noun
- A radioactive chemical element that is a silvery-white metal. It is used in smoke detectors and some medical devices.
- Scientists study americium to understand how radioactive elements behave.
- Smoke detectors often contain a small amount of americium to detect smoke particles.
- The lab safely stores americium in special containers to prevent radiation leaks.