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  1. Dictionary
    soil
    /soil/

    verb

    noun

    • 1. waste matter, especially sewage containing excrement.

    More definitions, origin and scrabble points

  2. Sep 25, 2024 · Soil, the biologically active, porous medium that has developed in the uppermost layer of Earth’s crust. It is one of the principal substrata of life on Earth, serving as a reservoir of water and nutrients, as a medium for the filtration and breakdown of wastes, and as a participant in the cycling of elements.

  3. Sep 25, 2024 · The evolution of soils and their properties is called soil formation, and pedologists have identified five fundamental soil formation processes that influence soil properties. These five “state factors” are parent material, topography, climate, organisms, and time.

  4. www.britannica.com › question › What-is-soilWhat is soil? | Britannica

    Soil is the biologically active and porous medium that has developed in the uppermost layer of Earth’s crust. It serves as the reservoir of water and nutrients and a medium for the filtration and breakdown of injurious wastes.

  5. Sep 25, 2024 · Soil - Structure, Composition, Properties: The grain size of soil particles and the aggregate structures they form affect the ability of a soil to transport and retain water, air, and nutrients.

  6. soil, The biologically active, porous medium that has developed in the uppermost layer of the Earth’s crust. Soil serves as a natural reservoir of water and nutrients, as a medium for the filtration and breakdown of injurious wastes, and as a participant in the cycling of carbon and other elements through the global ecosystem.

  7. SOIL meaning: 1 : the top layer of earth in which plants grow; 2 : the land of a particular country

  8. Soil is a mixture of minerals and organic material that covers much of Earth’s surface. Minerals are bits of rock, and organic material is the remains of living things that have died. Soil is not as solid as rock. It has many small spaces, called pores, that hold water and air.

  9. Sep 25, 2024 · Soil - Texture, Structure, Composition: The two principal systems of soil classification in use today are the soil order system of the U.S. Soil Taxonomy and the soil group system, published as the World Reference Base for Soil Resources, developed by the Food and Agriculture Organization (FAO) of the United Nations.

  10. soil mechanics, the study of the physical properties and utilization of soils, especially used in planning foundations for structures and subgrades for highways. The first scientific study of soil mechanics was undertaken by French physicist Charles-Augustin de Coulomb, who published a theory of earth pressure in 1773.

  11. Leaching, in geology, loss of soluble substances and colloids from the top layer of soil by percolating precipitation. The materials lost are carried downward (eluviated) and are generally redeposited (illuviated) in a lower layer.

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