Webster's Revised Unabridged Dictionary · 1913

Leavening

Leavening , noun

1.

The act of making light, or causing to ferment, by means of leaven.

2.

That which leavens or makes light. — Bacon

Text from the public-domain GNU Collaborative International Dictionary of English, derived from Webster's Revised Unabridged Dictionary (1913). Definitions marked with were added by later GCIDE contributors and are not in the original 1913 edition.

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