A system reflecting on a large scale one of its component systems or parts.(noun)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "macrocosm" in a sentence
"What happens in the macrocosm is reflected in the microcosm."
"Returning now to Plato's conception of community understood through the terms macrocosm and microcosm, what can the nursing world situation reveal to us of community?"
"The macrocosm is the universe as a whole, whose parts are thought of as parts of a human body and mind."