a wave-like formation in sand; spec. in Physical Geography, an undulation similar to a megaripple but on a larger scale.
| 单词 | θ2186 |
| 释义 | the world > the earth > land > landscape > high land > rising ground or eminence > [noun] > undulation > sand-wave (3) sand wave1820 a wave-like formation in sand; spec. in Physical Geography, an undulation similar to a megaripple but on a larger scale. sand ripple1879 one of a series of small parallel ridges or undulations in the surface of sand. megaripple1953 an extensive undulation of the surface of a sandy beach or sea bed, that is typically tens of metres from crest to crest and tens of centimetres in… |
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