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English definition of “undulating”

undulating

adjective     /ˈʌn.djʊ.leɪ.tɪŋ/ US  /-t̬ɪŋ/ formal
describing or having small hills and slopes that look like waves: undulating roads I love the gently undulating hills of the Dales.Bending, twisting and curvingHills and mountains moving gently up and down: undulating wavesBending, twisting and curvingHills and mountains undulate     /-leɪt/ verb [I]
(Definition of undulating adjective from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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