Agglomeration refers to the process of collecting or clustering together things, people, or ideas in one place. It is the act of forming a group or mass by putting different objects or elements close to each other. Full definition
Oddly, the meteorites are magnetic, which is strange because the planetesimals were supposed to be just large agglomerations of rubble. (sciencemag.org)
The reasons for such decline are many: trade, globalization, technological change, the dominance of agribusiness, energy policy, and the advantages of urban agglomeration. (thephiladelphiacitizen.org)
A large agglomeration of matter (Earth, say) curves space - time around it. (newscientist.com)