Precipitation is any meteorological phenomenon featuring water falling from the clouds, such as rain, snow, or hail.

Precipitation may also refer to:

• Alkaline precipitation, meteorological precipitation characterized by high alkalinity
• Precipitation (chemistry), condensation of a solid from a solution during a chemical reaction:
  • Ammonium sulfate precipitation, a method of purifying proteins
  • Precipitation hardening, a method used to strengthen malleable materials
  • Protein precipitation, a method of separating contaminants from biological products
  • Ethanol precipitation, a method of concentrating DNA
• Precipitation (horse), a racehorse
• Electron precipitation, an atmospheric phenomenon that occurs when previously trapped electrons enter the Earth's atmosphere

See also[edit]

• Coprecipitation
• Quantitative precipitation forecast
• Precipitate (disambiguation)