| NOUN | substance | fulvic acid | a yellow to yellow-brown humic substance that is soluble in water under all pH conditions |
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| Meaning | A yellow to yellow-brown humic substance that is soluble in water under all pH conditions. | |
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| Example | "they measured the fluvial fulvic acid" | |
| Broader | humic substance | An organic residue of decaying organic matter |
| Spanish | ácido fúlvico | |
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