Pronunciation: (frēd'mun), [key] Astron.
any model of the universe deduced from a homogeneous, isotropic solution of Einstein's field equations without a cosmological constant. Such models form the mathematical basis for many modern cosmologies and provide for expansion or contraction of the universe. Also called Fried'mann u"niverse.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.