\Mi"cro*cosm\, n. [F. microcosme, L. microcosmus, fr.
Gr. mikro`s small + ko`smos the world.]
A little world; a miniature universe. Hence (so called by
Paracelsus), a man, as a supposed epitome of the exterior
universe or great world. Opposed to {macrocosm}. --Shak.