undulation
noun
Forms undulations
- noun An instance or act of undulating.
- noun A wavy appearance or outline; waviness.
- noun (music) A tremulous tone produced by a peculiar pressure of the finger on a string.
- noun A wavelike curve; a smooth and regular rise and fall.
- noun A wavelike motion of the air; electromagnetic radiation.
- noun (medicine, dated) A feeling as if of an undulatory motion about the heart.
- noun (medicine, dated) The distinctive motion of the matter within an abscess on being pressed when it is ripe for opening.
Synonyms
Etymology
From undulate + -ion, or borrowed from Medieval Latin undulātiō; compare French ondulation.
Webster’s 1913
- noun The act of undulating; a waving motion or vibration; as, the undulations of a fluid, of water, or of air; the undulations of sound.
- noun A wavy appearance or outline; waviness. Evelyn.
Etymology [Cf. F. ondulation.]
Sources: Wiktionary · WordNet 3.0 · Webster’s 1913 — from the Wiktionary entry “undulation”, CC BY-SA 4.0. Details