Rust Producing, Causing Destruction of a Metal

This page is the CodyCross answer for the clue below from Train Travel, Group 709, Puzzle 5 (Hogwarts Express).

Question is: Rust Producing, Causing Destruction of a Metal

and the answer is: CORROSIVE

Word Meaning:

CORROSIVE — Eating away; having the power of gradually wearing, hanging, or destroying the texture or substance of a body; as the corrosive action of an acid.

Definitions from Wiktionary.