Zirconia nanoparticles, also known as zirconium dioxide (ZrO₂) nanoparticles, are nanoscale particles of zirconia. These particles generally range from 1 to 100 nanometers in size and exhibit unique properties due to their small size and high surface area. Zirconia nanoparticles are widely used in various fields of nanotechnology owing to their exceptional mechanical properties, thermal stability, and resistance to corrosion.