supersaturate

From super- +‎ saturate.

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supersaturate (third-person singular simple present supersaturates, present participle supersaturating, simple past and past participle supersaturated)

1. To cause a solution to have more solute dissolved in it than it can stably contain at current conditions.

   In science class the teacher prepared a supersaturated solution by cooling a saturated solution. He then added a small seed crystal and a large precipitate formed in just a second.