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Definition of Humic acid
1. Noun. A dark brown humic substance that is soluble in water only at pH values greater than 2. "The half-life of humic acid is measured in centuries"
Generic synonyms: Humic Substance
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1. Noun. A dark brown humic substance that is soluble in water only at pH values greater than 2. "The half-life of humic acid is measured in centuries"