precipitation

definition: 
The action or process of causing (a substance) to be deposited in solid form from a solution; Rain, snow, sleet, or hail that falls to or condenses on the ground;
sentence: 
The most common type of substitution reactions of compounds of metals is ion exchange accompanied by precipitation.
The end of August could lead to earlier nights and the odd spell of seasonal weather mixed in with unusual conditions, with precipitation likely where rain falls.
difficulty: 
medium
toefl frequency: 
2
toefl classification: 
adverb: 
adjective: 
adverb sentence: 
adjective sentence: 
verb: 
precipitate
verb sentence: 
When substances are precipitated by inorganic or organic processes the material is known as chemical sediment.