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An agent that causes rising, fermentation, or ferment; leaven.
1. an element of diversity; an enlivening element
2. (Cookery) cookery a raising agent
leav•en•ing(ˈlɛv ə nɪŋ)
1. Also called leav′ening a′gent. a substance used to produce fermentation in dough.
2. the process of causing fermentation by leaven.
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|Noun||1.||leavening - an influence that works subtly to lighten or modify something; "his sermons benefited from a leavening of humor"|
imponderable - a factor whose effects cannot be accurately assessed; "human behavior depends on many imponderables"
|2.||leavening - a substance used to produce fermentation in dough or a liquid|
substance - a particular kind or species of matter with uniform properties; "shigella is one of the most toxic substances known to man"
baking powder - any of various powdered mixtures used in baking as a substitute for yeast
sourdough - a leaven of dough in which fermentation is active; used by pioneers for making bread