Definition of leavening in English:

leavening

noun

  • 1A substance used in dough to make it rise, such as yeast or baking powder.

    ‘during the 18th century yeast was abandoned as a leavening for fruit cakes’
    as mass noun ‘everything will be made with natural leavening and wholegrain flour’
  • 2A quality or element that permeates and modifies or transforms something for the better.

    ‘underneath the frills and fuss there's a leavening of serious intent’

Pronunciation

leavening

/ˈlɛv(ə)nɪŋ/