English-Thai Dictionary
undulation
N การเคลื่อนไหว เป็น ลูกคลื่น kan-klaun-wai-pen-luk-kluen
undulation
N การ เป็น ลูกคลื่น การ เป็น ลอน ลักษณะ เป็น ลูกคลื่น twist wave kan-pen-luk-kluen
Webster's 1828 Dictionary
UNDULATION
n.[from undulate. ] 1. A waving motion or vibration; as the undulations of a fluid, of water or air; the undulations of sound. The undulations of a fluid are propagated in concentric circles.
2. In medicine, a particular uneasy sensation of an undulatory motion in the heart.
3. In music, a rattling or jarring of sounds, as when discordant notes are sounded together. It is called also beat.
4. In surgery, a certain motion of the matter of an abscess when pressed, which indicates its maturity or fitness for opening.
Webster's 1913 Dictionary
UNDULATION
Un `du *la "tion, n. Etym: [Cf. F. ondulation. ]
1. The act of undulating; a waving motion or vibration; as, the undulations of a fluid, of water, or of air; the undulations of sound.
2. A wavy appearance or outline; waviness. Evelyn.
3. (Mus. ) (a ) The tremulous tone produced by a peculiar pressure of the finger on a string, as of a violin. (b ) The pulsation caused by the vibrating together of two tones not quite in unison; -- called also beat.
4. (Physics )
Defn: A motion to and fro, up and down, or from side to side, in any fluid or elastic medium, propagated continuously among its particles, but with no translation of the particles themselves in the direction of the propagation of the wave; a wave motion; a vibration.
UNDULATIONIST
UNDULATIONIST Un `du *la "tion *ist, n.
Defn: One who advocates the undulatory theory of light. Whewell.
Duden Dictionary
Undulation
Un du la ti on Substantiv, feminin , die |Undulati o n |zu spätlateinisch undula = kleine Welle, Verkleinerungsform von lateinisch unda = Welle 1 Physik Wellenbewegung, Schwingung 2 Geologie Verformung der Erdkruste bei der Orogenese
Undulationstheorie
Un du la ti ons the o rie Substantiv, feminin Physik , die |Undulati o nstheorie |ohne Plural Theorie, nach der das Licht eine Wellenbewegung in einem sehr feinen, elastischen Medium 3 ist
Sanseido Wisdom Dictionary
undulation
ù n du l á tion 名詞 1 U 波動, うねり ; 波形, 起伏 .2 C 起伏のある箇所 .
The Wordsmith Dictionary