Advertisement
Advertisement
humic acid
noun
- 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.
Discover More
Word History and Origins
Origin of humic acid1
First recorded in 1835–45
Discover More
Example Sentences
This deposit, if obtained from light brown peat, is ulmic acid; if from black peat, it is humic acid.
From Project Gutenberg
There is in this fermentation a large quantity of cold sour humic acid formed, which seriously impairs the value of the manure.
From Project Gutenberg
His peat or humic acid tannage was patented by him about 1905, and is now worked on a commercial scale.
From Project Gutenberg
In soils that are acid through the accumulation of humic acid nitrification does not go on, and bacterial life is repressed.
From Project Gutenberg
Advertisement
Advertisement
Advertisement
Advertisement
Browse