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Từ điển WordNet v3.1 - WordNet Dictionary
undulation
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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