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

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n. Plural form of aggregation.

"We hypothesize that an important reason for male and female tropical bats to form long term aggregations is to profit from more efficient foraging via information transfer, postulated previously as a reason for sociality in males of narrow-winged temperate-zone species"

syllables    organogenesis    coughin'    agglomeration    collectivity