accumulation

definition: 
A mass or quantity of something that has gradually gathered or been acquired
sentence: 
There is a strong possibility that dangerous accumulations of this toxicant exist in humans and animals.
Forecasters expect significant accumulations of snow from Virginia and North Carolina into New England.
difficulty: 
very easy
toefl frequency: 
2
toefl classification: 
adverb: 
adjective: 
accumulative
adverb sentence: 
adjective sentence: 
the accumulative effects of pollution.
verb: 
accumulate
verb sentence: 
If inhaled continuously these toxins accumulate in the body leading to serious health problems. When the rate of absorption exceeds the rate of elimination, toxins accumulate in the body.