Go to MSN Homeencarta®
Dictionary
Find
in
Dictionary
Thesaurus
Translations
ABCDEFGHIJKLMNOPQRSTUVWXYZ
Click to move up the list of words
A-D conversion
à deux
A & E
a.f.
a fortiori
A-frame
à gogo
A.h.
A-horizon
a.k.a.
A&L
à l’espagnole
A/L management
A&L management
à la
à la carte
à la carte agency
Click to move down the list of words
Also available:

U.S. English Dictionary
Dictionnaire Français

A-horizon
A-horizon (plural A-horizons)


noun 
Definition:
 
upper layer of soil: the uppermost layer of soil containing humus, topsoil, and organic debris
Encarta® World English Dictionary [World English Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
Advertisement
© 2009 Microsoft