yeast

/jist/
noun
  1. A single-celled fungus used in baking and brewing to make dough rise or to ferment liquids.
    • Beer is made by fermenting grains with yeast.
    • The recipe calls for one packet of active dry yeast.
    • Bakers add yeast to bread dough to help it rise.
  2. A substance or influence that causes activity, growth, or change.
    • Her enthusiasm was the yeast that brought the team together.
    • The artist's work was the yeast that sparked a new movement.
    • New ideas acted as a yeast for social change in the community.
Synonyms
What does "yeast" mean? | whatsthatwordmean | whatsthatwordmean