agglomeration (n.)youdaoicibaDictYouDict[agglomeration 词源字典]
1774, "action of collecting in a mass," from Latin agglomerationem (nominative agglomeratio), noun of action from past participle stem of agglomerare (see agglomerate). In reference to a mass so formed, it is recorded from 1833.[agglomeration etymology, agglomeration origin, 英语词源]