leavening

Từ điển WordNet v3.1 - WordNet Dictionary

noun

1. an influence that works subtly to lighten or modify something (Freq. 1)
- his sermons benefited from a leavening of humor
• Syn:
leaven
• Hypernyms:
imponderable
2. a substance used to produce fermentation in dough or a liquid
• Syn:
leaven
• Derivationally related forms:
leaven (for: leaven)
• Hypernyms:
substance
• Hyponyms:
baking powder, sourdough, yeast, barm