caustic; corrosive agent; etching reagent; escharotic
Technical term used in chemistry, medicine, and industrial contexts for a substance that corrodes or burns tissue or material.
This corrosive agent is used to dissolve metals.
If a caustic substance gets on your skin, wash it off immediately.
Compound of 腐食 (corrosion) and 薬 (drug, chemical). The exact historical derivation is uncertain, but the term is a straightforward technical coinage.