What is the meaning of A-horizon?

noun

  • The top layer of a soil profile; usually contains humus.
WordNet 3.0 © 2006 by Princeton University
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APAWordNet. (2010). a-horizon. Retrieved September 27, 2026, from http://smartdefine.org/a-horizon/definitions/1224518
ChicagoWordNet. 2010. "a-horizon" http://smartdefine.org/a-horizon/definitions/1224518 (accessed September 27, 2026).
HarvardWordNet 2010, a-horizon, Smart Define, viewed 27 September, 2026, <http://smartdefine.org/a-horizon/definitions/1224518>.
MLAWordNet. "a-horizon" 23 October 2010. Web. 27 September 2026. <http://smartdefine.org/a-horizon/definitions/1224518>