WordReference Random House Unabridged Dictionary of American English © 2026
o′pen u′niverse, [Astron.]
  1. Astronomy, Physicsa model of the universe in which the universe expands forever because there is not enough mass to counteract the expansion by means of gravitational attraction. Cf. closed universe. 
  • 1975–80

'open universe' also found in these entries (note: many are not synonyms or translations):
closed universe - curvature of space - oscillating universe

Forum discussions with the word(s) "open universe" in the title:


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