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A HORIZON
\ɐ həɹˈa͡ɪzən], \ɐ həɹˈaɪzən], \ɐ h_ə_ɹ_ˈaɪ_z_ə_n]\
Definitions of A HORIZON
2006 - WordNet 3.0
2011 - English Dictionary Database
Sort: Oldest first
the
top
layer
of
a
soil
profile
; usually contains
humus
2006
- WordNet 3.0
By Princeton University
the
top
layer
of
a
soil
profile
; usually contains
humus
2011
- English Dictionary Database
By DataStellar Co., Ltd
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