etchant
etchant — noun
1. a chemical liquid or solution that eats away or cuts into a hard surface such as
a chemical liquid or solution that eats away or cuts into a hard surface such as metal, glass, or silicon, used to create patterns, designs, or electronic circuits
The technician poured a strong etchant onto the copper plate to create the circuit pattern.
use + [etchant] + on + [material]
Different metals require specific etchants for clean results.
countable plural: specific etchants
Amelia uses a commercial etchant to prepare silicon wafers for microchip production.
The lab stored the etchant in a sealed glass bottle marked with a warning label.
Noor found that heating the etchant made it work much faster on the brass surface.
- etching agent
more descriptive and slightly less common than 'etchant'
- mordant
specific to printmaking and artistic etching; not used for industrial processes like circuit-making
- protectant
a chemical that shields a surface instead of eating into it
文法句型
use [etchant] on [material]
[etchant] + verb (dissolves, eats away, removes)
用法筆記
Usually found in technical contexts such as electronics manufacturing, metalworking, and printmaking. The noun is countable because different materials require different chemical mixtures for etching.