Undulation Explained

Undulation may refer to:

• Undulation of the geoid, the separation between the geoid and the reference ellipsoid of the Earth
• Undulation point, a point on a curve where the curvature vanishes but does not change sign
• Undulatory locomotion, the most primitive of vertebrate locomotor patterns
• In botany, a wave shaped part such as a leaf
• Undulation (album), a 2021 live album by Sam Rivers