UNDULATION Definition Meaning - Merriam-Webster The meaning of UNDULATION is a rising and falling in waves The greens are large and feature a lot of undulation, so lag putting and three-putt avoidance are factors — Dennis Esser, New York Times, 8 Apr 2025 Through it all, there’s the metronomic wash of the tides onto the sand, waves lapping the beach, the undulation of the ocean, and the cityscape of Rockaway, with its large apartment