Definitions for precipitation

(the quantity of water falling to earth at a specific place within a specified period of time; "the storm brought several inches of precipitation")

(the process of forming a chemical precipitate)

(the falling to earth of any form of water (rain or snow or hail or sleet or mist))

(the act of casting down or falling headlong from a height)

(an unexpected acceleration or hastening; "he is responsible for the precipitation of his own demise")

(overly eager speed (and possible carelessness); "he soon regretted his haste")