Longman Dictionary of Contemporary English homepage

Date: 1600-1700
Language: Medieval Latin
Origin: macrocosmos, from Latin macro- ( MACRO-) + Greek kosmos ( COSMOS)

macrocosm

 noun
     
mac‧ro‧cos‧m [countable]
a large, complicated system such as the whole universe or a society, considered as a single unit [≠ microcosm]
Definition from the Longman Dictionary of Contemporary English
Advanced Learner's Dictionary.

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