Dictionary.com
Thesaurus.com

humic acid

American  

noun

  1. a brown, melanin-tinted mixture of polymers, found in lignite, peat, and soils, where it acts as a cation exchange agent: used in drilling fluids and inks.


Etymology

Origin of humic acid

First recorded in 1835–45

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

Organic-rich soils seem particularly problematic; they are ripe with molecules like humic acid, which behaves like DNA and can foul later sequencing.

From Science Magazine Dec. 10, 2019

Lignite coal is the main raw material for Yongye’s humic acid products, according to filings.

From BusinessWeek Jun. 22, 2011

The purchase of the humic acid supplier opened access to raw materials, said Yu.

From BusinessWeek Jun. 22, 2011

Our land cost so much to reclaim for hay, being soaked in humic acid, that we had always to import that commodity at a cost which made more cows than absolutely essential very inadvisable.

From A Labrador Doctor The Autobiography of Wilfred Thomason Grenfell by Grenfell, Wilfred Thomason, Sir

I suppose you will reply, By combining with oxygen and forming humic acid.

From Essays in Natural History and Agriculture by Garnett, Thomas

Vocabulary.com logo
by dictionary.com

Dictionary.com's Learning Companion

Go beyond just looking up words.
Remember them forever with VocabTrainer.

Start training