Definition of: microcosm

(mī′krə·koz′əm) noun
1. A little world; the world or universe on a small scale; hence, man, as if combining in himself all the elements of the great world: opposed to macrocosm.
2. A little community. Also mi′·cro· cos′mos (-koz′məs), mi′cro·cos′mus. [<F microcosme <LL microcosmus <Gk. mikroskosmos, lit., little world]
—mi′cro·cos′mic, mi′cro·cos′mi·cal, mi′cro·cos′mi·an adjective