/ Dictionary / Index O oscillating universe: Meaning and Definition of Find definitions for: os'cillating u'niverse Pronunciation: [key] — Astron. Astron. a variant model of the closed universe in which the universe undergoes cycles of expansion and contraction. Cf. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. oscillating engine oscillation Related Content Daily Word Quiz: mamba Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language