/ Dictionary / Index O oscillatory: Meaning and Definition of Find definitions for: os•cil•la•to•ry Pronunciation: (os'u-lu-tôr"ē, -tōr"ē), [key] — adj. characterized by or involving oscillation. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: oscillatory (Thesaurus) oscillator oscillogram 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