Learn more: Angina is chest pain or discomfort caused when your heart muscle doesn't get enough oxygen-rich blood. It may feel like pressure or squeezing in your chest. The discomfort also can occur in your shoulders, arms, neck, jaw, or back.Angina pain may even feel like indigestion.But, angina is not a disease.earn more: Angina is chest pain or discomfort caused when your heart muscle doesn't get enough oxygen-rich blood. It may feel like pressure or squeezing in your chest. The discomfort also can occur in your shoulders, arms, neck, jaw, or back. Angina pain may even feel like indigestion.
Definition of leaven. 1a : a substance (such as yeast) used to produce fermentation in dough or a liquid; especially : sourdoughb : a material (such as baking powder) used to produce a gas that lightens dough or batter.
Leaven is an ingredient used in bread-making that creates the holes you see in bread loaves. Leavening agents permeate the dough by releasing gases that cause the entire batch of dough to rise. In Hebrew, leaven is called se'or (×©×Ö°××Ö¹×¨) whereas a leavened product is called chametz (×Ö¸×Öµ×¥).In ancient times, se'or was as a lump of old dough allowed to reach a high level of fermentation (sometimes called sourdough or yeast).eaven is an ingredient used in bread-making that creates the holes you see in bread loaves. Leavening agents permeate the dough by releasing gases that cause the entire batch of dough to rise. In Hebrew, leaven is called se'or (×©×Ö°××Ö¹×¨) whereas a leavened product is called chametz (×Ö¸×Öµ×¥).