precipitation

英 [prɪˌsɪpɪˈteɪʃn]

美 [prɪˌsɪpɪˈteɪʃn]

n. 降水，降水量(包括雨、雪、冰等); 沉淀; 淀析

BNC.17263 / COCA.11784

牛津词典

noun

降水，降水量（包括雨、雪、冰等）
rain, snow, etc. that falls; the amount of this that falls
1. an increase in annual precipitation
  年降水量的增加
沉淀；淀析
a chemical process in which solid material is separated from a liquid

降水
Precipitationis rain, snow, or hail.
沉淀；沉析
Precipitationis a process in a chemical reaction which causes solid particles to become separated from a liquid.

noun

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