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Webster 1913 Edition
Humin
Hu′min
,Noun.
[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.