from The Century Dictionary.
- noun A neutral indifferent substance said by Mulder to exist in black humus.
from the GNU version of the Collaborative International Dictionary of English.
- noun (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, ulmicor geic acid, etc.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun The part of the
organicmatter in soilthat does not dissolve in dilute alkali
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun a black humic substance that is not soluble in water
Sorry, no etymologies found.
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