American Heritage® Dictionary of the English Language, Fourth Edition
- adj. Of, relating to, or found in alluvium: alluvial soil; alluvial gold.
Century Dictionary and Cyclopedia
- Of, pertaining to, or composed of alluvium: as, alluvial deposits; alluvial soil.
- A term applied to the most recent or postglacial deposits, which follow the diluvial deposits.
- n. Alluvial soil; specifically, in Australia and New Zealand, gold-bearing alluvial soil.
- adj. Pertaining to the soil deposited by a stream.
- n. A deposition of sediment over a long period of time by a river; an alluvial layer.
GNU Webster's 1913
- n. Alluvial soil; specif., in Australia, gold-bearing alluvial soil.
- adj. Pertaining to, contained in, or composed of, alluvium; relating to the deposits made by flowing water; washed away from one place and deposited in another.
- adj. of or relating to alluvium
- From Latin alluvius ("alluvial"), from alluviō ("an overflowing, inundation"), from alluō ("wash against"). (Wiktionary)
“Diamonds occur in alluvial lands mostly open and comparatively level, as in India, the Brazil and the Cape.”
“Estimates of "prehistoric" and early historic diamond production suggest that 50 to 100,000 carats per year were found, mostly in alluvial deposits in river gravels.”
“Sapphires are found in alluvial soil near rocks and embedded in gneiss.”
“Aquifers occurring in Namibia are classified as alluvial, Kalahari, fracture, Karst or artesian aquifers.”
“Underwater abyssal fans can be compared to terrestrial landforms known as alluvial fans.”
“Like the latter, the Brazilian fields were alluvial, that is, the materials were deposited by river action after having been carried to some distance from their original sources.”
“In the great laboratory of Nature similar chemical depositions have taken place in the past, and may still be in progress; indeed, there is sound scientific reason to suppose that in certain localities this is even now the case, and that in this way much of our so-called alluvial gold has been formed, that is, by the deposition on metallic bases of the gold held in solution.”
“The Greeks called the alluvial deposit at the mouth of the Nile, from its shape, the Delta of the Nile.”
“The only other chance for agriculture on the river, except Wonsits Valley, Brown's Park, and a few minor places, is below Black Canyon, in the stretches I have called the alluvial and the canyon-valley divisions.”
“The whole land is alluvial, that is, formed, gradually, through thousands of years, of the rich mud deposited by the two rivers, as they spread into vast marshy flats towards the end of their course.”
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