/ Dictionary / Index Q quasi-stellar object: Meaning and Definition of Find definitions for: qua'si-stel'lar ob'ject Pronunciation: (kwā'zī-stel'ur, kwā'sī-, kwä'sē-, -zē-), [key] quasar. Abbr.: QSO Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. quasiparticle quasi-stellar radio source Related Content Daily Word Quiz: agitated Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language