What is "anatomic dead space"

alt. 1 (context anatomy English) That volume of conducting airways of the lung, as measured by a cast of the airways. 2 (context physiology English) That volume of inspired gas that does not mix with alveolar gas, as measured in vivo by gas dilution, by the method of Fowler. n. 1 (context anatomy English) That volume of conducting airways of the lung, as measured by a cast of the airways. 2 (context physiology English) That volume of inspired gas that does not mix with alveolar gas, as measured in vivo by gas dilution, by the method of Fowler.