closed universe

Từ điển WordNet v3.1 - WordNet Dictionary

noun

(cosmology) a universe that is spatially closed and in which there is sufficient matter to halt the expansion that began with the big bang;
the visible matter is only 10 percent of the matter required for closure but there may be large amounts of dark matter
• Topics:
cosmology, cosmogony, cosmogeny
• Hypernyms:
universe, existence, creation, world, cosmos, macrocosm