zirconia
/zɜrˈkoʊniə/
noun
- A white, hard, synthetic material used to make artificial gemstones and in dentistry for crowns and bridges.
- Zirconia is also used in industrial applications because it resists heat and wear.
- She chose a zirconia engagement ring because it looked like a diamond but cost much less.
- The dentist recommended a zirconia crown for its strength and natural appearance.