From Latin ōscillātus, perfect passive participle of Latin ōscillō (“swing”), from ōscillum (“a swing”), usually identified with ōscillum (“a little face or mask hung to a tree and swaying with the wind”), diminutive of ōs (“mouth, face”).
- (intransitive) To swing back and forth, especially if with a regular rhythm.
- A pendulum oscillates slower as it gets longer.
- (intransitive) To vacillate between conflicting opinions, etc.
- The mood for change oscillated from day to day.
- (intransitive) To vary above and below a mean value.
- oscillate in Webster’s Revised Unabridged Dictionary, G. & C. Merriam, 1913.
- oscillate in The Century Dictionary, New York, N.Y.: The Century Co., 1911.
- oscillate at OneLook Dictionary Search