conglomerate
/kənˈglɔmərət; kən`ɡlɑmərɪt/ n
1 materials gathered together into a rounded mass （聚集成团的）聚合物.
2 rock made of small stones held together by cement, dried clay, etc （由小石块用水泥、 泥等粘结而成的）岩块.
3 (commerce 商) large corporation formed by merging several different firms （通过合并若干企业而组建的）大公司, 企业集团
a mining, chemical, etc conglomerate 矿业、 化工等企业集团.