undulate
verb (used without object)
to move with a sinuous or wavelike motion; display a smooth rising-and-falling or side-to-side alternation of movement.
are undulating
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present progressiveof undulate.present progressive
Used to describe an ongoing action or state that is currently taking place in the immediate present.
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Because the streets are undulating rather than flat, each section was constructed from steel frames and then cladded, finished and painted.
From Los Angeles Times ● Feb. 5, 2024
They are undulating, “breathing” systems crammed with organisms so tiny and metabolizing so slowly that nobody ever noticed.
From Scientific American ● Feb. 12, 2018
Inside the grocery stores are undulating produce sections, meat counters, dry-goods shelves and refrigerated dairy cases.
From New York Times ● Feb. 13, 2014
The walls of a Gaudi designed apartment house rise like eroded cliffs; his roofs are undulating, and wrought-iron leaves bristle from his eaves and sills.
From Time Magazine Archive
Both kinds of lines are wavy lines because the sheets of wind are undulating.
From Over Prairie Trails by Frederick Philip Grove
