1. Bring about abruptly
2. Being contrary or opposed in character
3. done with very haste and without due deliberation
4. (chemistry) separate as a fine suspension of solid particles

1. The huge violence in the college was not something spontaneous, rather it was precipitated by the college politics.
2. The purple color of the potassium manganate (vii ) is eventually replaced by a dark brown precipitate of manganese(iv ) oxide.
3. The major precipitated a last minute crisis of getting ready.

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