Definition of humus
geology : a brown or black complex variable material resulting from partial decomposition of plant or animal matter and forming the organic (see 1organic 3a(1)) portion of soil
Recent Examples of humus from the Web
The composting process employs billions of microorganisms to break down organics into the essential component of soil called humus.
Plant the tubers 4 to 6 inches deep in well-drained, humus-rich soil in an area with early-morning sun or partial shade.
The organization will have its annual spring humus and plant sale 9 a.m. to noon May 20 at Lakewood Park near the Oldest Stone House - rain or shine.
KLB volunteers will be selling black gold humus, which can be used on lawns or in gardens, as well as new and different perennials, hostas and herbs.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'humus'. Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
HUMUS Defined for English Language Learners
Definition of humus for English Language Learners
: a brown or black material in soil that is formed when plants and animals decay
HUMUS Defined for Kids
Definition of humus for Students
: the dark rich part of earth formed from decaying plant or animal material
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