Leaven definitions

lĕv'ən
An agent, such as yeast, that causes batter or dough to rise, especially by fermentation.
noun
52
0
An element, influence, or agent that works subtly to lighten, enliven, or modify a whole.
noun
49
1
To add a rising agent to.
verb
46
1
To cause to rise, especially by fermentation.
verb
43
1
To pervade with a lightening, enlivening, or modifying influence.
verb
40
1
noun
27
0
To make (batter or dough) rise before or during baking by means of a leavening agent.
verb
24
1
To spread through, causing a gradual change.
verb
21
0
Any agent used to make dough rise or to have a similar effect on baked goods.
noun
3
0
(figuratively) Anything that makes a general assimilating (especially a corrupting) change in the mass.
noun
3
0
To add a leavening agent.
verb
0
0
To cause to rise by fermentation.
verb
0
0
(figuratively) To temper an action or decision.
verb
0
0
To imbue; to infect; to vitiate.
verb
0
0

Origin of leaven

Middle English from Old French levain from Vulgar Latin levāmen from Latin levāre to raise legwh- in Indo-European roots