B horizon

noun

Definition of B horizon

: a subsurface soil layer that is immediately beneath the A horizon from which it obtains organic matter chiefly by illuviation and is usually distinguished by less weathering

First Known Use of B horizon

1938, in the meaning defined above

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The first known use of B horizon was in 1938

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Cite this Entry

“B horizon.” The Merriam-Webster.com Dictionary, Merriam-Webster Inc., https://www.merriam-webster.com/dictionary/B%20horizon. Accessed 15 December 2019.

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