A winding or sinuosity; spec. an undulation or gentle curve of the ground; a slight hill or hollow; the general grouping of heights and hollows.
| 单词 | θ4833 |
| 释义 | the world > the earth > structure of the earth > structural features > fold or dip > [noun] (42) folda1250 A winding or sinuosity; spec. an undulation or gentle curve of the ground; a slight hill or hollow; the general grouping of heights and hollows. siddle1849 Downward slope; dip (of a coal-seam). plication1859 A fold, a ridge; (Biology and Medicine) = plica, n. 2. saddleback1865 Geology. An anticlinal fold. Cf. saddle, n.1 5b. Now rare. Subcategories:— axis of fold system (3) — part of fold (1) — direction of fold (1) — anticlinorium (1) — anticline (6) — geanticline (2) — synclinorium (2) — syncline (3) — geosyncline (9) — monocline (2) — homocline (2) — overfold (2) — depression or basin (1) — others (3) |
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