| 释义 |
alluvion|əˈl(j)uːvɪən|
[a. Fr. alluvion, ad. L. alluviōn-em a washing against, inundation; f. al- = ad- to + -luvio washing, f. lu-ĕre to wash.]
1. The wash or flow of the sea against the shore, or of a river on its banks.
1536Bellendene Cron. Scotl. (1821) I. Pref. 48 Ane gret tre was brocht, be alluvion and flux of the see, to land. 1665Marvell Poems Wks. 1776 III. 288 Holland..the off-scouring of the British sand, Or what by the ocean's slow alluvion fell, Of ship-wreck'd cockle and the muscle-shell. 1753Chambers Cycl. Supp. s.v., Great alterations are made..by alluvions of the sea. 1851Sir F. Palgrave Norm. & Eng. I. 321 The isle..has not been obliterated by alluvion.
2. An inundation or overflow; a flood, especially when the water is charged with much matter in suspension.
1550Nicolls Thucydides 92 (R.) Of the whyche alluuyons and overflowynges the earthquakes (as I thynke) were the cause. 1644Howell Lett. (1753) 456 Slow rivers, by insensible alluvions, take in and let out the waters that feed them. 1830Lyell Princ. Geol. I. 349 A current of mud is produced..So late as the 27th of October, 1822, one of these alluvions descended the cone of Vesuvius.
3. The matter deposited by a flood or inundation.
1731Bailey, Alluvion, an accession or accretion along the sea-shore, or the banks of large rivers by tempests or inundations. 1833Lyell Princ. Geol. III. 60 Detached alluvions covering the emerged land. 1849F. Shoberl tr. Hugo's Hunchb. 104 Every wave of time superinduces its alluvion.
4. esp. The matter gradually deposited by a river. = alluvium.
1779Mann in Phil. Trans. LXIX. 602 The matters, so carried off, will be thrown against the opposite bank of the river..and produce a new ground, called an alluvion. 1834Bancroft Hist. U.S. I. xiii. 423 A hardy race multiplied along the alluvion of the streams. 1841Catlin North Amer. Ind. (1844) I. iii. 19 Spreading the deepest and richest alluvion over the surface of its meadows.
5. Law. The formation of new land by the slow and imperceptible action of flowing water.
1751Hume Ess., Justice (1817) II. 483 The accessions which are made to land bordering upon rivers, follow the land, say the civilians, provided it be made by what they call alluvion, that is insensibly and imperceptibly. 1880Muirhead Gaius ii. §70 That becomes ours which is brought to us by alluvion. |