| Front | verb 1 move one's hand to and fro in greeting or as a signal: 2 move to and fro with a swaying motion while remaining fixed to one point: 3 style (hair) so that it curls slightly: noun 1 a long body of water curling into an arched form and breaking on the shore: 2 a sudden occurrence of or increase in a phenomenon, feeling, or emotion: 3 a gesture or signal made by moving one's hand to and fro: 4 a slightly curling lock of hair: 5 Physics a periodic disturbance of the particles of a substance which may be propagated without net movement of the particles, such as in the passage of undulating motion, heat, or sound. See also standing wave and travelling wave. |
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| Back | wave |
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