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.
Rib. any one of the paired elements of the axial skeleton in vertebrates, including man, that articulate with the spine. Ribs form primarily in the myosepta between successive muscle segments of the trunk. There are two types of ribs in animalsâupper and lower ribs.