microcosm

noun

mi·​cro·​cosm ˈmī-krə-ˌkä-zəm 

1

: a little world

especially : the human race or human nature seen as an epitome (see epitome sense 1) of the world or the universe

2

: a community or other unity that is an epitome (see epitome sense 2) of a larger unity

The suburb has been the microcosm of the city.

microcosmic

ˌmī-krə-ˈkäz-mik 

adjective

microcosmically

ˌmī-krə-ˈkäz-mi-k(ə-)lē 

adverb

Phrases

in microcosm

: in a greatly diminished size, form, or scale

Did you know?

Small wonder that the oldest meaning of microcosm in our dictionary is “little world”: the word comes ultimately from the Greek phrase mikros kosmos, meaning “little universe.” That meaning can be applied to many a wee realm, as in “the microcosm of the atom,” but microcosm was originally used by medieval scholars specifically to refer to humans as miniature embodiments of the natural universe. Microcosm soon expanded to refer to places (such as neighborhoods or other communities) thought to embody at a small scale characteristics of larger places, and later to anything serving as an apt representation of something bigger—as when Arthur C. Clarke, famed author of much fiction and nonfiction set in the cosmos, noted that “a sunken ship is a microcosm of the civilization that launched it.”

Examples of microcosm in a Sentence

The village is a microcosm of the whole country.

The game was a microcosm of the entire season.

Recent Examples on the Web

The microcosm of this family unit in its death throes is all there right on the court, from Bernard’s toxic competitiveness to the way Walt unconsciously picks up on his dad’s cues and then lords his victory over his little brother (Owen Kline). —Joe Reid, Vulture, 29 Aug. 2025

Struggling Volpe The inning was a microcosm of Volpe’s challenges this season. —Daniel R. Epstein, Forbes.com, 28 Aug. 2025

This is the microcosm of the macro-lie. —Jake Kanter, Deadline, 27 Aug. 2025

Valparaiso’s Central Park became a global microcosm Sunday afternoon for the 16th annual World Cultural Festival. —Doug Ross, Chicago Tribune, 25 Aug. 2025

Word History

Etymology

Middle English, from Medieval Latin microcosmus, modification of Greek mikros kosmos

First Known Use

15th century, in the meaning defined at sense 1

Rhymes for microcosm

• macrocosm

Podcast

Get Word of the Day delivered to your inbox!

Kids Definition

microcosm

noun

mi·​cro·​cosm ˈmī-krə-ˌkäz-əm 

: an individual or community thought of as a miniature universe or a world in itself