/ Dictionary / Index O oscillator: Meaning and Definition of Find definitions for: os•cil•la•tor Pronunciation: (os'u-lā"tur), [key] — n. a circuit that produces an alternating output current of a certain frequency determined by the characteristics of the circuit components. a device or machine producing oscillations. a person or thing that oscillates. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: oscillator (Thesaurus) oscillation oscillatory 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