/ ˈmaɪkrəʊkɒzəm; NAmE -kroʊkɑːz-/ noun
a thing, a place or a group that has all the features and qualities of sth much larger :
The family is a microcosm of society.
—compare macrocosm
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IDIOMS
- in microcosm
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WORD ORIGIN
Middle English : from Old French microcosme or medieval Latin microcosmus , from Greek mikros kosmos little world.