Astron.
the hypothesis that the universe is isotropic and homogeneous on a large scale: used to simplify the equations of general relativity for models of the universe.
Astron.
the hypothesis that the universe is isotropic and homogeneous on a large scale: used to simplify the equations of general relativity for models of the universe.
Random House Webster's Unabridged English dictionary. Полный английский словарь Вебстер - Random House . 2012