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From our dictionary:

cor•ro•sive

Pronunciation: (ku-rO'siv), [key]
adj.
1. having the quality of corroding or eating away; erosive.
2. harmful or destructive; deleterious: the corrosive effect of poverty on their marriage.
3. sharply sarcastic; caustic: corrosive comments on the speaker's integrity.

n.
something corrosive, as an acid or drug.

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