To enlarge or grow; to become bigger.
To enlarge; to make bigger.
To rise or become larger.
To add a leavening agent.
To cause to rise by fermentation.
To temper an action or decision.
To imbue; to infect; to vitiate.
Anything that induces change, especially a corrupting or vitiating change.
Any agent used to make dough rise or to have a similar effect on baked goods.