What is the meaning of humic acid?

noun

  • A dark brown humic substance that is soluble in water only at pH values greater than 2.
    • usage: "the half-life of humic acid is measured in centuries"
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APAWordNet. (2010). humic acid. Retrieved September 27, 2026, from http://smartdefine.org/humic_acid/definitions/1248832
ChicagoWordNet. 2010. "humic acid" http://smartdefine.org/humic_acid/definitions/1248832 (accessed September 27, 2026).
HarvardWordNet 2010, humic acid, Smart Define, viewed 27 September, 2026, <http://smartdefine.org/humic_acid/definitions/1248832>.
MLAWordNet. "humic acid" 23 October 2010. Web. 27 September 2026. <http://smartdefine.org/humic_acid/definitions/1248832>