undulation.
An instance or act of undulating.
Meaning & usage
An instance or act of undulating.
A wavy appearance or outline; waviness.
A tremulous tone produced by a peculiar pressure of the finger on a string.
A wavelike curve; a smooth and regular rise and fall.
A wavelike motion of the air; electromagnetic radiation.
A feeling as if of an undulatory motion about the heart.
The distinctive motion of the matter within an abscess on being pressed when it is ripe for opening.
Where this word comes from
From undulate + -ion, or borrowed from Medieval Latin undulātiō; compare French ondulation.
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.