Wiktionary
undulations
n. (plural of undulation English)
Usage examples of "undulations".
It is uneven ground, varied by undulations, with gravelly hills, rising above valleys filled with clay, and both alike favourable to the growth of woods.
The glutinous silt of the river formed undulations across the expanding estuary at Dartford.
Great teak-framed windows, swathed in fine gilt silk, ran from floor to ceiling, and the light from the sea threw brilliant undulations on to the arched sapphire walls.
The almond-shaped brown eyes of the Hillander region where one could look out to sea, look out to the horizon and find nothing between land and sky but the constant undulations of waves.