Definition: Humus is organic matter partly or wholly decomposed. When the decomposition of humus is hastened by human intervention in order to use it as a soil amendment, it is virtually synonymous with compost. A generous admixture of humus to soil can help make it friable.
Also Known As: Adjectival form: humusy.
Common Misspellings: hummus, humous
Examples:
A soil with plenty of humus drains better than does a compacted soil.
