This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

n. Plural form of accumulation.

"The park is full of trails, well-marked ones that are nonetheless left mostly to themselves to form under the foot traffic - making the trails themselves a rich mixture of granite and quartz and hardwood roots lined with deep, long-term accumulations of crackling leaves."

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