ALL meanings of humic acid
hu·mic ac·id
H h - noun humic acid 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. 1
- noun humic acid a brown powder consisting of organic acids, derived from humus 0
- noun humic acid (chemistry) a complex mixture of organic acids produced by the decomposition of vegetable matter. 0