A horizon

n. In ABC soil, the uppermost, darkest zone that is rich in organic matter. Also called zone of eluviation, zone of leaching.

A horizon

n (Physical Geography) the top layer of a soil profile, usually dark-coloured and containing humus and from which soluble salts may have been leached. See B horizon, C horizon

A horizon

n. the topsoil in a soil profile. [1935–40]

Thesaurus

Noun

A horizon - the top layer of a soil profile; usually contains humusA-horizonhumus - partially decomposed organic matter; the organic component of soil

EncyclopediaSeesoil horizon

A horizon

the uppermost zone of soil, containing leaf-litter at the top, raw humus in the middle, and a dark-coloured humus layer at the bottom. See also B HORIZON.

A horizon

Related to A horizon: C horizon, B horizon

noun

Synonyms for A horizon

noun the top layer of a soil profile

Synonyms

A-horizon

Related Words

humus

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