noun
- the former systematic name for the chemical element rutherfordium (atomic number 104)
Usage: chemistry; obsolete
Examples
- Unnilquadium was the temporary name used for element 104 before it was officially named rutherfordium.
- Scientists referred to the newly discovered element as unnilquadium in early research papers.
- The systematic naming system gave us unnilquadium, meaning ‘one-zero-four’ in Latin.
- Unnilquadium has been replaced by the official name rutherfordium in modern chemistry.
- The element formerly known as unnilquadium is highly radioactive and synthetic.