humic acid


: any of various organic acids obtained from humus

Example Sentences

Recent Examples on the Web Consumers have the option of dozens of products — in drops, tablets, powders and pastes — that claim to provide the healing power of fulvic and humic acid. NBC News, 2 Dec. 2021 As humic acid is made more bio-available, weed seeds are much less likely to germinate. Howard Garrett, Dallas News, 28 Dec. 2020 All of it has darkened somewhat because of the development of humic acids. Rodrigo Pérez Ortega, Science | AAAS, 18 Feb. 2020

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'humic acid.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Word History

First Known Use

1843, in the meaning defined above

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

Dictionary Entries Near humic acid

Cite this Entry

“Humic acid.” Dictionary, Merriam-Webster, Accessed 2 Feb. 2023.

Medical Definition

humic acid

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

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