Precipitation (meteorology), rain, sleet, hail, snow and other forms of water falling from the sky
Precipitation (chemistry), the condensation of a solid from a solution during a chemical reaction
Precipitation (horse), a Thoroughbred racehorse
Acid precipitation, a type of meteorological precipitation characterized by high acidity
Ammonium sulfate precipitation, a method of purifying proteins
Basic precipitation, a type of precipitation characterized by high alkalinity
Ethanol precipitation, a method of concentrating DNA
Precipitation hardening, a method used to strengthen malleable materials
Protein precipitation, a method of separating contaminants from biological products
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