leaching

[leech] Origin

leach

1[leech]
verb (used with object)
1.
to dissolve out soluble constituents from (ashes, soil, etc.) by percolation.
2.
to cause (water or other liquid) to percolate through something.
verb (used without object)
3.
(of ashes, soil, etc.) to undergo the action of percolating water.
4.
to percolate, as water.

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Leaching is always a great word to know.
So is gobo. Does it mean:
a children's mummer's parade, as on the Fourth of July, with prizes for the best costumes.
a screen or mat covered with a dark material for shielding a camera lens from excess light or glare.
noun
5.
the act or process of leaching.
6.
a product or solution obtained by leaching; leachate.
7.
the material leached.
8.
a vessel for use in leaching.

Origin:
1425–75; late Middle English leche leachate, infusion, probably Old English *læc(e), *lec(e), akin to leccan to wet, moisten, causative of leak

leach·a·ble, adjective
leach·a·bil·i·ty, noun
leach·er, noun
un·leached, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Etymonline
Word Origin & History

leach
O.E. leccan "to moisten" (see leak). The word disappears, then re-emerges late 18c. in a technological sense in ref. to percolating liquids.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

leaching leach·ing (lē'chĭng)
n.
See lixiviation.


leach v.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
leaching   (lē'chĭng)  Pronunciation Key 
The removal of soluble material from a substance, such as soil or rock, through the percolation of water. Organic matter is typically removed from a soil horizon and soluble metals or salts from a rock by leaching. Leaching differs from eluviation in that it affects soluble, not suspended, material and often results in the complete removal of the material from the soil or rock.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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