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 demurrage. 1  1 : the detention of a ship by the freighter beyond the time allowed for loading, unloading, or sailing. 2  2 : a charge for detaining a ship, freight car, or truck.