1. moving or swinging back and forth in a regular rhythm
2. characterized by variation between opposing or different states, conditions, or actions

Examples

• The oscillatory motion of the pendulum kept perfect time.
• Scientists studied the oscillatory behavior of the spring system.
• The patient’s oscillatory breathing pattern concerned the doctors.
• Market prices showed an oscillatory trend throughout the quarter.
• The oscillatory current alternated between positive and negative values.
• Her oscillatory mood swings made it difficult to predict her reactions.