humic acid

noun

: any of various organic acids obtained from humus

Examples of humic acid in a Sentence

Recent Examples on the Web
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Covington Liquid Aerator’s formula consists of over 100 billion live microbes per gallon in addition to minerals, essential nutrients, humic acid and seaweed extract which all work to loosen and break up soil and increase the uptake of nutrients. — Jack Byram, Better Homes & Gardens, 9 Jan. 2024 This product combines peat mud, salicylic acid, and naturally derived ingredients like fulvic and humic acids. — Lindsay Modglin, Health, 1 June 2023

Word History

First Known Use

1843, in the meaning defined above

Time Traveler
The first known use of humic acid was in 1843

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“Humic acid.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/humic%20acid. Accessed 12 Mar. 2025.

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Medical Definition

humic acid

noun
hu·​mic acid ˈhyü-mik- How to pronounce humic acid (audio) ˈyü- How to pronounce humic acid (audio)
: any of various organic acids obtained from humus

More from Merriam-Webster on humic acid

Britannica.com: Encyclopedia article about humic acid

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