Americium (noun)

A radioactive element with the atomic number 95, used in smoke detectors and portable X-ray machines.

Origin:

Named after america, where it was first synthesized.

Examples:

1. Americium is a metal with a silvery appearance and is highly radioactive.
2. The smoke detectors use americium to detect the presence of smoke.
3. The use of americium in portable X-ray machines allows doctors to perform scans in remote locations.
4. The discovery of americium was a significant milestone in the field of nuclear science.
5. The radioactivity of americium makes it dangerous to handle without proper protection.