: the uppermost dark-colored layer of a soil consisting largely of partly disintegrated organic debris
Word History
First Known Use
1896, in the meaning defined above
Dictionary Entries Near A horizon
Cite this Entry
“A horizon.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/A%20horizon. Accessed 31 May. 2023.
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Kids Definition
A horizon
noun
A ho·ri·zon
ˈā-hə-ˌrī-zən
: the outer dark-colored soil with a light texture consisting usually of soil rich in debris obtained from living things in various stages of disintegration
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