Definitions

1. noun

A gentle, repeated rising and falling movement, especially of a wave or a sound.

“The undulation of the ocean waves against the shore created a soothing melody.”

2. noun

A wavelike motion or curvature, especially in a line or shape.

“The undulation of the mountain range stretched across the landscape.”

3. verb

To move with a smooth, wavelike motion, or to cause something to do so.

“The wind undulated through the trees, causing the leaves to rustle and sway.”

4. verb

To change or fluctuate in a smooth, wavelike manner.

“The economy undulated over the years, influenced by various economic factors.”