Humus definition

hyo͝oməs
A brown or black organic substance consisting of partially or wholly decayed vegetable or animal matter that provides nutrients for plants and increases the ability of soil to retain water.
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A dark-brown or black organic substance made up of decayed plant or animal matter. Humus provides nutrients for plants and increases the ability of soil to retain water.
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A large group of natural organic compounds, found in the soil, formed from the chemical and biological decomposition of plant and animal residues and from the synthetic activity of microorganisms.
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Alternative spelling of hummus.
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A brown or black substance resulting from the partial decay of plant and animal matter; organic part of the soil.
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The definition of humus is partially decomposed organic matter.

Partially decomposed plant matter in the soil is an example of humus.

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Origin of humus

  • Latin soil dhghem- in Indo-European roots

    From American Heritage Dictionary of the English Language, 5th Edition

  • Borrowing from Turkish humus or Arabic حُمُّصٌ (ḥummuṣ).

    From Wiktionary

  • Borrowing from Latin humus.

    From Wiktionary