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.
Wiktionary (0.00 / 0 votes) Rate this definition: overreach (Noun) The act of striking the heel of the fore foot with the toe of the hind foot; -- said of horses. overreach (Noun) The act of extending or reaching too far, overextension. overreach (Verb) To reach above or beyond in any direction. overreach (Verb) To deceive, or get the better of, by artifice or cunning; to outwit; to cheat. overreach (Verb) To reach too far. overreach (Verb) To strike the toe of the hind foot against the heel or shoe of the forefoot; -- said of horses. overreach (Verb) To sail on one tack farther than is necessary. overreach (Verb) To cheat by cunning or deception.