Definition of "undulations" []

• Plural form of undulation. (noun)

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• "But in the longer perspective that I have tried to take today, they are manifestations, at different times, of the same thing, namely the undulations in the intensity of business activity that we must expect in this country."
• "= In order to show on a map a correct representation of ground, the depressions and elevations, -- that is, the undulations, -- must be represented."
• "Westward the hills followed each other, forming several intermediate and partial valleys, in a kind of undulations, like the waves of the sea; and, bending to the south, completed the boundary of the larger valley before described, to the southward of the hill on which I sat."