Undulation

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