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leach1

[leech] /litʃ/
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.
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
late Middle English
1425-1475
1425-75; late Middle English leche leachate, infusion, probably Old English *læc(e), *lec(e), akin to leccan to wet, moisten, causative of leak
Related forms
leachable, adjective
leachability, noun
leacher, noun
unleached, adjective

leach2

[leech] /litʃ/
noun, Nautical
1.
leech3 .
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for leaches

leach1

/liːtʃ/
verb
1.
to remove or be removed from a substance by a percolating liquid
2.
to lose or cause to lose soluble substances by the action of a percolating liquid
3.
another word for percolate (sense 1), percolate (sense 2)
noun
4.
the act or process of leaching
5.
a substance that is leached or the constituents removed by leaching
6.
a porous vessel for leaching
Derived Forms
leacher, noun
Word Origin
C17: variant of obsolete letch to wet, perhaps from Old English leccan to water; related to leak

leach2

/liːtʃ/
noun
1.
a variant spelling of leech2

Leach

/liːtʃ/
noun
1.
Bernard (Howell). 1887–1979, British potter, born in Hong Kong
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for leaches

leach

v.

Old English leccan "to moisten, water, wet, irrigate," (see leak). The word disappears, then re-emerges late 18c. in a technological sense in reference to percolating liquids. Related: Leached; leaching.

Online Etymology Dictionary, © 2010 Douglas Harper
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