echard
American Heritage Dictionary:
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ec·hard
(ĕk'härd') 
n.
Soil water not available for absorption by plants.
n.
Soil water not available for absorption by plants.
[From Greek ekhein, to hold back + ardeia, irrigation (from ardein, to irrigate).]
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American Heritage Dictionary
The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.
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