Humic+acid
1Humic acid — is one of the major components of humic substances [http://www.ihss.gatech.edu/whatarehs.html] which are dark brown and major constituents of soil organic matter humus that contributes to soil chemical and physical quality and are also precursors …
2humic acid — n. a brown powder consisting of organic acids, derived from humus …
3humic 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. [1835 45] * * * ▪ chemistry one of two classes of natural acidic organic polymer… …
4humic acid — noun a dark brown humic substance that is soluble in water only at pH values greater than 2 the half life of humic acid is measured in centuries • Hypernyms: ↑humic substance * * * noun : any of various organic acids that are insoluble in alcohol …
5humic acid — Humin Hu min, n. [L. humus the earth, ground.] (Chem.) A bitter, brownish yellow, amorphous substance, extracted from vegetable mold, and also produced by the action of acids on certain sugars and carbohydrates; called also {humic acid}, {ulmin} …
6humic acid — hu·mic acid hyü mik , yü n any of various organic acids obtained from humus …
7humic acid — noun Date: 1843 any of various organic acids obtained from humus …
8humic acid — noun a complex mixture of organic acids produced by the decomposition of vegetable matter …
9Humic — Hu mic, a. [L. humus the earth, ground: cf. F. humique.] (Chem.) Pertaining to, or derived from, vegetable mold; as, humic acid. See {Humin}. [1913 Webster] …
10humic substance — noun an organic residue of decaying organic matter • Hypernyms: ↑organic compound • Hyponyms: ↑fulvic acid, ↑humic acid, ↑humin …
