nappe (n p)n. 1. A sheet of water flowing over a dam or similar structure. 2. Geology A large sheetlike body of rock that has been moved far from its original position. 3. Mathematics Either of the two parts into which a cone is divided by the vertex. [French, tablecloth, nappe, from Old French, tablecloth, from Latin mappa, napkin; see map.] |
nappe [næp]
n
1. (Earth Sciences / Geological Science) a large sheet or mass of rock, commonly a recumbent fold, that has been thrust from its original position by earth movements
2. the sheet of water that flows over a dam or weir
3. (Mathematics) Geometry either of the two parts into which a cone (sense 2) is divided by the vertex
[from French: tablecloth]
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