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UNDULATION
| Pronunciation (US): |  | (GB): | |
I. (noun)
Sense 1
Meaning:
(physics) a movement up and down or back and forth
Synonyms:
undulation; wave
Classified under:
Hypernyms ("undulation" is a kind of...):
motion; movement (a natural event that involves a change in the position or location of something)
Domain category:
natural philosophy; physics (the science of matter and energy and their interactions)
Hyponyms (each of the following is a kind of "undulation"):
gravitation wave; gravity wave ((physics) a wave that is hypothesized to propagate gravity and to travel at the speed of light)
sine wave (a wave whose waveform resembles a sine curve)
oscillation; vibration ((physics) a regular periodic variation in value about a mean)
fluctuation (a wave motion)
seiche (a wave on the surface of a lake or landlocked bay; caused by atmospheric or seismic disturbances)
standing wave; stationary wave (a wave (as a sound wave in a chamber or an electromagnetic wave in a transmission line) in which the ratio of its instantaneous amplitude at one point to that at any other point does not vary with time)
traveling wave; travelling wave (a wave in which the medium moves in the direction of propagation of the wave)
acoustic wave; sound wave ((acoustics) a wave that transmits sound)
wave form; wave shape; waveform (the shape of a wave illustrated graphically by plotting the values of the period quantity against time)
blast wave; shock wave (a region of high pressure travelling through a gas at a high velocity)
impulse; pulsation; pulse; pulsing ((electronics) a sharp transient wave in the normal electrical state (or a series of such transients))
flap; flapping; flutter; fluttering (the motion made by flapping up and down)
Derivation:
undulate (move in a wavy pattern or with a rising and falling motion)
Sense 2
Meaning:
Wavelike motion; a gentle rising and falling in the manner of waves
Classified under:
Nouns denoting natural events
Hypernyms ("undulation" is a kind of...):
motion; movement (a natural event that involves a change in the position or location of something)
Derivation:
undulate (move in a wavy pattern or with a rising and falling motion)
Sense 3
Meaning:
An undulating curve
Synonyms:
undulation; wave
Classified under:
Nouns denoting two and three dimensional shapes
Hypernyms ("undulation" is a kind of...):
curve; curved shape (the trace of a point whose direction of motion changes)
Hyponyms (each of the following is a kind of "undulation"):
sine curve; sinusoid (the curve of y=sin x)
