If risen bread is desired, one must leaven the dough, either by mixing it with a piece of already leavened dough or leaving it exposed to yeast spores in the air for a period ranging from a single day to several, depending on the ambient conditions.
Medical Definition of RIB CAGE. : the bony enclosing wall of the chest consisting chiefly of the ribs and the structures connecting themâcalled also thoracic cage.ull Definition of RIB CAGE. : the bony enclosing wall of the chest consisting chiefly of the ribs and the structures connecting them. See rib cage defined for English-language learners.
The rib cage or thoracic cage is a collection of long bones that connect to the thoracic vertebrae and sternum. The main function of the rib cage in mammalian skeleton is to protect the heart and lungs. In larger mammals it also plays a big role in supporting the abdomen.