C2 [ T ] to collect a large number of things over a long period of time:
The company said the debt was accumulated during its acquisition of nine individual businesses.
More examples
- It can be dangerous to let too much soot accumulate inside a chimney.
- During a successful business career, she accumulated a great amount of wealth.
- After a long career in the antiques trade, Harry had accumulated many rare treasures.
- During our six years in this house, we seem to have accumulated an awful lot of junk.
- Why don't you just do a little ironing every now and then, instead of letting it accumulate?
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