noun
- Plural of protactinium; the chemical element with atomic number 91, a radioactive metal found in uranium ores.
Usage: chemistry; technical
Examples
- Protactiniums are rare radioactive elements studied in nuclear chemistry laboratories.
- The isotope protactinium-231 is found in trace amounts in uranium deposits.
- Scientists measure protactiniums using specialized detection equipment.
- Protactiniums have limited practical applications due to their radioactivity and scarcity.