Dict: strongs - yeast

Strongs:

H4682 @ מצּה matstsâh mats-tsaw' From H4711 in the sense of greedily devouring for sweetness; properly sweetness; concretely sweet (that {is} not soured or bittered with yeast); specifically an unfermented cake or {loaf} or (elliptically) the festival of Passover (because no leaven was then used): - unleavened ({bread} {cake}) without leaven.

H7603 @ שׂאר ώe'ôr seh-ore' From H7604; barm or yeast cake (as swelling by fermentation): - leaven.