flutter

名词 n. 动词 v.
中文释义
英 /ˈflʌtə/    美 /ˈflʌtɚ/|[-ɾɚ]

英文释义

名词 n.
  1. The act of fluttering; quick and irregular motion. countable,uncountable
    — the flutter of a fan
  2. A state of agitation. countable,uncountable
    — flutter of spirits
  3. An abnormal rapid pulsation of the heart. countable,uncountable
  4. An extremely dangerous divergent oscillation caused by a positive feedback loop between the elastic deformation of an object and the aerodynamic forces acting on it, potentially resulting in rapid structural failure. uncountable
    — The possibility was studied that there might be some unknown phenomenon at work that could cause a reduction in structural stiffness with age. Such a reduction in stiffness could result in a reduced flutter speed and lead to flutter. In 2004, Airbus conducted GVT in support of its MRTT program. The testing was conducted on an aged A310 aircraft (MSN 523) that had accumulated over 28 000 flight hours. This test aircraft had the same design of VTP and rudder as the occurrence aircraft. GVT results found that fin bending and rudder rotation frequencies of the MRTT test aircraft were consistent with those obtained during the original A310-300 certification. No indication was found to suggest that stiffness had reduced with age.
  5. A small bet or risky investment. UK,countable,uncountable
    — "Oh, by the way, I heard of a rather good thing today, New Kleinfonteins; it's a gold mine in Rhodesia. If you'd like to have a flutter you might make a bit."
  6. A hasty game of cards or similar. countable,uncountable
  7. The rapid variation of signal parameters, such as amplitude, phase, and frequency. countable,uncountable
动词 v.
  1. To flap or wave quickly but irregularly. intransitive
    — flags fluttering in the wind
  2. Of a winged animal: to flap the wings without flying; to fly with a light flapping of the wings. intransitive
    — Banks of gorgeous flowers were on every hand, and birds with rare and brilliant plumage sang and fluttered in the trees and bushes.
  3. To undergo divergent oscillations (potentially to the point of causing structural failure) due to a positive feedback loop between elastic deformation and aerodynamic forces. intransitive
  4. To cause something to flap. transitive
    — A bird flutters its wings.
  5. To drive into disorder; to throw into confusion. transitive
    — If you haue vvrit your Annales true, 'tis there, / That like an Eagle in a Doue-cote, I / Flatter'd^([sic – meaning Flutter'd]) your Volcians in Corioles.
  6. To be in a state of agitation or uncertainty. intransitive
    — It was fluttering with nervousness like a human heart. He was all in a sweat with fear, and—do you know, I don't believe the rascal is a Robot at all any longer.
  7. To be frivolous. intransitive,obsolete
  8. To subject to a lie detector test. slang
    — This was the first time that Nosenko had been subjected to a lie detector — or what the CIA called fluttering. The Soviet Union did not use such devices for interrogation.

词形变化

flutters present,singular,third-person fluttering participle,present fluttered participle,past fluttered past flutters plural

词汇关系

衍生词
aflutter beflutter flutteration flutterer fluttering elm flutterment flutter the dovecot flutter-tongue forflutter unflutterable flutterball flutterboard flutterby flutter in the dovecote flutter kick flutterless fluttersome flutter tongue flutter wheel fluttery synchronous diaphragmatic flutter take a flutter

词源

词源 1
From Middle English floteren, from Old English floterian, flotorian (“to float about, flutter”), from Proto-Germanic *flutrōną, frequentative of Proto-Germanic *flutōną (“to float”), equivalent to float + -er (frequentative suffix). Cognate with West Frisian flodderje (“to flutter, beat”), Dutch flodderen (“to flutter, wave”), Low German fluttern, fluddern (“to flutter”), German flittern (“to sparkle, glitter”). More at float.
词源 2
From Middle English floteren, from Old English floterian, flotorian (“to float about, flutter”), from Proto-Germanic *flutrōną, frequentative of Proto-Germanic *flutōną (“to float”), equivalent to float + -er (frequentative suffix). Cognate with West Frisian flodderje (“to flutter, beat”), Dutch flodderen (“to flutter, wave”), Low German fluttern, fluddern (“to flutter”), German flittern (“to sparkle, glitter”). More at float.
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