noun
tempered glass; toughened glass
Refers to safety glass processed by thermal or chemical treatments to increase its strength. Used in windows, doors, shower enclosures, and smartphone screens.
このビルの窓には強化ガラスが使われている。
Tempered glass is used for the windows of this building.
スマホの画面は強化ガラスで保護
The smartphone screen is protected by tempered glass.