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Dictionary definition for: Caustic

1. (n) any chemical substance that burns or destroys living tissue

2. (s) harsh or corrosive in tone; "an acerbic tone piercing otherwise flowery prose" "a barrage of acid comments" "her acrid remarks make her many enemies" "bitter words" "blistering criticism" "caustic jokes about political assassination, talk-show hosts

3. (s) of a substance, especially a strong acid; capable of destroying or eating away by chemical action

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