Humin

2 definitions found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  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}, {gein}, {ulmic} or {geic acid}, etc.
     [1913 Webster]



From WordNet (r) 2.0 [wn]:

  humin
       n : a black humic substance that is not soluble in water