macrocosmEnglishOxford New American Dictionarymacrocosm /ˈmakrōˌkäzəm, ˈmækroʊˌkɑzəm / (also macrocosmos /-ˌkäzməs, -mōs/) ▸ noun the whole of a complex structure, especially the world or the universe, contrasted with a small or representative part of it. Contrasted with microcosm. – DERIVATIVES macrocosmic /ˌmakrəˈkäzmik/ adjective,macrocosmically /ˌmakrəˈkäzmik(ə)lē/ adverb