HyperDicEnglishHUMI ... humic substance

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Related WikiPedia: humic substance
English 1 sense of the expression humic substance:
NOUNsubstancehumic substancean organic residue of decaying organic matter
Englishhumic substance: 1 sense noun 1, substance
MeaningAn organic residue of decaying organic matter.
Narrowerfulvic acidA yellow to yellow-brown humic substance that is soluble in water under all pH conditions
humic acidA dark brown humic substance that is soluble in water only at pH values greater than 2
huminA black humic substance that is not soluble in water
Broaderorganic compoundAny compound of carbon and another element or a radical

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