Solum meaning

sō'ləm
The upper layers of a soil profile in which topsoil formation occurs.
noun
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The altered soil or material overlying the parent material, often including the A-horizon and the B-horizon.
noun
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The upper layers of a soil profile in which soil formation occurs. The A and B horizons in an ABC soil are part of the solum.
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Within a soil profile, a set of related soil horizons that share the same cycle of pedogenic processes.
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Origin of solum

  • Latin base, ground
    From American Heritage Dictionary of the English Language, 5th Edition
  • From Latin solum (“base, bottom; soil").
    From Wiktionary