alluvial: [19] Alluvial material is material that has been washed down and deposited by running water. Hence the term; for its ultimate source, Latin lavere (a variant of lavāre, which produced English latrine, laundry, lava, lavatory, lavish, and lotion), meant ‘wash’. Addition of the prefix ad- ‘to’ changed lavere to luere, giving alluere ‘wash against’.
Derived from this were the noun alluviō (source of the English technical term alluvion ‘alluvium’) and the adjective alluvius, whose neuter form alluvium became a noun meaning ‘material deposited by running water’. English adopted alluvium in the 17th century, and created the adjective alluvial from it in the 19th century. If Latin alluere meant ‘wash against’, abluere meant ‘wash away’.
Its noun form was ablūtiō, which English acquired as ablution in the 14th century. => ablution, latrine, laundry, lavatory, lavish, lotion
alluvial (adj.)
1802, from Latin alluvius "alluvial" (see alluvium) + -al (1).
例文
1. Alluvial soils usually grow the bestcrops.
堆積土壌は通常、最高の作物を作ることができる。
2.Thus, alluvial channel flows are simultaneously sculptor and sculpture.
このように、沖積河川敷の流れは形作られたものであり、形作られたものでもある。
3.The water cuts the alluvial banks of the "lower "river into deep horseshoe curves.
川の水は下流の沖積した川岸を深い馬蹄形曲線に突き進んでいる。
4.Bangkok is surrounded by a vast，damp， alluvial plain，crisscrossed by a network of klong，.
バンコクは広く湿った沖積平原に囲まれ、縦横に入り組んだ運河網がある。
5.Upward-fining channels may occor in a wide range of environments，from submarine canyon to alluvial fan.