the GNU version of the Collaborative International Dictionary of English
adj. Pertaining to, or derived from, vegetable mold. See humin.
The Century Dictionary and Cyclopedia
Pertaining to or derived from mold (humus).
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
adj. of or relating to or derived from humus
Word Usage
"Specifically, they evaluate changes in total soil organic carbon and in the chemical characteristics of the soil organic matter and its main constituents known as humic substances (from humus origin)."