Definition of "Precipitation" :
noun: overly eager speed (and possible carelessness)
noun: an unexpected acceleration or hastening
"He is responsible for the precipitation of his own demise."
noun: the act of casting down or falling headlong from a height
noun: the falling to earth of any form of water (rain or snow or hail or sleet or mist)
noun: the process of forming a chemical precipitate
noun: the quantity of water falling to earth at a specific place within a specified period of time
"The storm brought several inches of precipitation."