b-horizon

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WORDNET DICTIONARY

Noun b-horizon has 1 sense

b-horizon(n = noun.location) b horizon - immediately below the A-horizon; contains deposits of organic matter leached from surface soils; Array

is a kind of soil horizon

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CIDE DICTIONARY

b-horizon, n.

that layer of soil in a well-developed soil lying immediately below the A-horizon, and which contains deposits of organic matter leached from surface soils. [WordNet 1.5]

For further exploring for "b-horizon" in Webster Dictionary Online