B horizon

noun

: 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

Word History

First Known Use

1938, in the meaning defined above

Time Traveler
The first known use of B horizon was in 1938

Dictionary Entries Near B horizon

Cite this Entry

“B horizon.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/B%20horizon. Accessed 18 May. 2024.

More from Merriam-Webster on B horizon

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!