Definition of leavened:
Still we might admit the possibility that the real author of the feats was present when John kneaded that cake, leavened it with supermundane yeast, and made use of it as an instrumentality for coming into closer contact than before with the human bodies from which part of the ingredients of the cake had been derived.- "Witchcraft of New England Explained by Modern Spiritualism", Allen Putnam.
- "The Child Under Eight", E.R. Murray and Henrietta Brown Smith.
Beethoven grew out of Mozart and Haydn, adding a leaven which in the end leavened the whole lump, but in the outset adding little; Mozart grew out of Haydn, in the outset adding little; Haydn grew out of Domenico Scarlatti and Emmanuel Bach, adding, in the outset, little.- "The Note-Books of Samuel Butler", Samuel Butler.