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precipitation Line breaks: pre¦cipi|ta¦tion
Pronunciation: /prɪˌsɪpɪˈteɪʃ(ə)n/

Definition of precipitation in English:


[mass noun]
1 Chemistry The action or process of precipitating a substance from a solution.
Example sentences
  • Acidic proteins are known to trigger carbonate precipitation via matrix mediated processes in microbialites.
  • Cell debris was removed by centrifugation, and the supernatant was fractionated by ammonium sulfate precipitation.
  • The most common type of substitution reactions of compounds of metals is ion exchange accompanied by precipitation.
2Rain, snow, sleet, or hail that falls to or condenses on the ground: these convective processes produce cloud and precipitation [count noun]: the heavy post-monsoon precipitations
More example sentences
  • In places where the warmer air extends to the ground, the precipitation will fall as rain.
  • Acid rain refers to any precipitation, rain or snow, that's more acid than ordinary rain or snow.
  • The end of August could lead to earlier nights and the odd spell of seasonal weather mixed in with unusual conditions, with precipitation likely where rain falls.
3 archaic The fact or quality of acting suddenly and rashly: Cora was already regretting her precipitation


Late Middle English (denoting the action of falling or throwing down): from Latin praecipitatio(n-), from praecipitare 'throw down or headlong' (see precipitate).

Definition of precipitation in:

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