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Từ điển Oxford Learners Wordfinder Dictionary
undulation


noun
1. an undulating curve
Syn:
wave
Hypernyms:
curve, curved shape
Hyponyms:
sine curve, sinusoid
2. wavelike motion;
a gentle rising and falling in the manner of waves
Derivationally related forms:
undulate
Hypernyms:
movement, motion
3. (physics) a movement up and down or back and forth
Syn:
wave
Derivationally related forms:
undulate
Topics:
physics, natural philosophy
Hypernyms:
movement, motion
Hyponyms:
gravity wave, gravitation wave, sine wave, oscillation, vibration,
fluctuation, seiche, standing wave, stationary wave, traveling wave, travelling wave,
sound wave, acoustic wave, wave form, waveform, wave shape, shock wave,
blast wave, pulsation, pulsing, pulse, impulse, flap,
flapping, flutter, fluttering


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