an inundation of moving or drifting sand.
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| 单词 | θ5808 |
| 释义 | the world > the earth > structure of the earth > constituent materials > ejected volcanic material > [noun] > stones, dust, or sand (5) sand flood1668 an inundation of moving or drifting sand. lapilli1747 With plural agreement. Small stones or pebbles; now only spec. of the fragments of stone ejected from volcanoes. rapilli1768 With plural agreement. Small fragments of rock, esp. pumice, ejected from a volcano. Cf. lapilli, n. lapillo1811 Matter ejected from volcanoes in the form of lapilli. tephra1944 Dust and rock fragments that have been ejected into the air by a volcanic eruption. Frequently attributive. |
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