1. a chemical substance used to etch or corrode a surface, especially in metalworking or semiconductor manufacturing
Usage: technical

Examples

• The technician applied the etchant to remove the unwanted metal layers.
• Hydrofluoric acid is a common etchant used in glass etching.
• The semiconductor factory uses various etchants in the chip manufacturing process.
• Safety equipment is essential when handling any etchant solution.
• The artist chose a mild etchant for the delicate copper plate.