'B-horizon' definitions:

Definition of 'B-horizon'

From: WordNet
noun
Immediately below the A-horizon; contains deposits of organic matter leached from surface soils [syn: B-horizon, B horizon]

Definition of 'B-horizon'

From: GCIDE
  • B-horizon \B-horizon\ n. that layer of soil in a well-developed soil lying immediately below the A-horizon, and which contains deposits of organic matter leached from surface soils.
  • Syn: B horizon. [WordNet 1.5]