Nuclear (adjective)

1. Relating to or involving the nucleus of an atom.
2. Relating to or using the energy released by nuclear reactions.

Origin:

Early 19th century: from french nucléaire, from latin nucleus "kernel".

Examples:

1. Nuclear power plants generate electricity.
2. Nuclear weapons are very powerful.
3. Nuclear physics is the study of the properties and interactions of atomic nuclei.
4. Nuclear medicine uses small amounts of radioactive materials for diagnostic and therapeutic purposes.
5. Nuclear fusion is the process that powers the sun.