MUSCLES OF RESPIRATION. When the diaphragm contracts in inspiration, initially the lower ribs are fixed and the dome of the diaphragm descends, thus increasing the vertical diameter of thorax.
arrearage. 1  the state or condition of being in arrears. 2  Often, arrearages. arrears; amount or amounts overdue. 3  Archaic. a thing or part kept in reserve.
Definition of 'augur'. augur. If something augurs well or badly for a person or a future situation, it is a sign that things will go well or badly. The renewed violence this week hardly augurs well for smooth or peaceful change.