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leavening

[lev-uh-ning] /ˈlɛv ə nɪŋ/
noun
1.
Also called leavening agent. a substance used to produce fermentation in dough or batter; leaven.
2.
the act or process of causing to ferment by leaven.
3.
leaven (def 3).
Origin of leavening
1600-1610
First recorded in 1600-10; leaven + -ing1

leaven

[lev-uh n] /ˈlɛv ən/
noun
1.
a substance, as yeast or baking powder, that causes fermentation and expansion of dough or batter.
2.
fermented dough reserved for producing fermentation in a new batch of dough.
3.
an element that produces an altering or transforming influence.
verb (used with object)
4.
to add leaven to (dough or batter) and cause to rise.
5.
to permeate with an altering or transforming element.
Origin
1300-50; Middle English levain < Anglo-French, Old French levain < Vulgar Latin *levāmen, equivalent to Latin levā(re) to raise + -men deverbal noun suffix (probably not continuous with Latin levāmen means of alleviating, solace)
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Based on the Random House Dictionary, © Random House, Inc. 2017.
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British Dictionary definitions for leavening

leaven

/ˈlɛvən/
noun
1.
any substance that produces fermentation in dough or batter, such as yeast, and causes it to rise
2.
a piece of such a substance kept to ferment a new batch of dough
3.
an agency or influence that produces a gradual change
verb (transitive)
4.
to cause fermentation in (dough or batter)
5.
to pervade, causing a gradual change, esp with some moderating or enlivening influence
Word Origin
C14: via Old French ultimately from Latin levāmen relief, (hence, raising agent, leaven), from levāre to raise
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 leavening

leaven

v.

c.1400, from leaven (n.). Related: Leavened; leavening.

leaven

n.

mid-14c., from Old French levain "leaven, sourdough" (12c.), from Latin levamen "alleviation, mitigation," but used in Vulgar Latin in its literal sense of "a means of lifting, something that raises," from levare "to raise" (see lever). Figurative use from late 14c.

Online Etymology Dictionary, © 2010 Douglas Harper
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