Definition of agglomeration
1 : the action or process of collecting in a mass
the agglomeration of matter into stars and galaxies
2 : a heap or cluster of usually disparate (see disparate sense 1) elements
… an agglomeration of 100-year-old cottages with gingerbread scroll-saw ornamentation.— Ira Henry Freeman
3 : a large, densely and contiguously populated area consisting of a city and its suburbs
an urban agglomeration
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Time Traveler for agglomeration
The first known use of agglomeration was in 1661
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