Leaven

• (v. t.) To make light by the action of leaven; to cause to ferment. • (n.) Any substance that produces, or is designed to produce, fermentation, as in dough or liquids; esp., a portion of fermenting dough, which, mixed with a larger quantity of dough, produces a general change in the mass, and renders it light; yeast; barm. • (n.) ...
Found on http://thinkexist.com/dictionary/meaning/leaven/

leaven

prove verb cause to puff up with a leaven; `unleavened bread`
Found on https://www.encyclo.co.uk/local/20974

leaven

leavening noun an influence that works subtly to lighten or modify something; `his sermons benefited from a leavening of humor`
Found on https://www.encyclo.co.uk/local/20974

Leaven

Leav'en noun [ Middle English levain , levein , French levain , Latin levamen alleviation, mitigation; but taken in the sense of, a raising, that which raises, from levare to raise. See Lever , noun ] 1. Any substance that pro...
Found on http://www.encyclo.co.uk/webster/L/25

Leaven

Leav'en transitive verb [ imperfect & past participle Leavened ; present participle & verbal noun Leavening .] 1. To make light by the action of leaven; to cause to ferment. « A little leaven leaveneth the whole lump...
Found on http://www.encyclo.co.uk/webster/L/25

leaven

A substance, such as yeast, used to produce fermentation in dough to cause it to rise or lighten.
Found on http://www.encyclo.co.uk/local/20108

leaven

Element inducing fermentation. The term is applied to the yeast added to dough in bread-making; it is used figuratively to describe any pervasive influence, usually in a good sense, although in...
Found on http://www.encyclo.co.uk/local/20688

leaven

Element inducing fermentation. The term is applied to the yeast added to dough in bread-making; it is used figuratively to describe any pervasive influence, usually in a good sense, although in the Old Testament it symbolized corruption, and unleavened bread was used in sacrifice
Found on http://www.talktalk.co.uk/reference/encyclopaedia/hutchinson/m0001938.html

leaven

leaven (lev'un) , agent used to raise bread or other flour foods. Physical leavens include water vapor, which is released as steam at high temperatures (as in popovers), and air, which is incorporated by beating. Chemical leaven (baking powder and baking soda) and biological leavens (yeasts and ...
Found on http://www.infoplease.com/ce6/society/A0829172.html

Leaven

Leaven refers to dough in which fermentation has commenced, employed to ferment and render light the fresh dough with which it is mingled. Its use dates from remotest antiquity; the addition of yeast or barm being of modern date.
Found on http://www.probertencyclopaedia.com/browse/QL.HTM

leaven

substance which is added to dough to produce fermentation; specifically a quantity of fermenting dough reserved from a previous batch to be used for this purpose.
Found on http://www2.shu.ac.uk/sfca/glossary.cfm

Leaven

The raising agent in dough, usually yeast or baking powder.
Found on http://www.encyclo.co.uk/local/21220

leaven

[n] - a substance used to produce fermentation in dough or a liquid 2. [n] - an influence that works subtly to lighten or modify something
Found on http://www.webdictionary.co.uk/definition.php?query=leaven
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