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.
Definition of rib. 1  form vertical ribs by knitting; A ribbed sweater. 2  support resembling the rib of an animal. 3  a projecting molding on the underside of a vault or ceiling; may be ornamental or structural. 4  a riblike supporting or strengthening part of an animal or plant. any of the 12 pairs of curved arches of bone extending from the spine to or toward the sternum in humans (and similar bones in most vertebrates) a teasing remark. cut of meat including one or more ribs.