: belonging only to the person or group specified. 1  She has the sole authority to hire new staff members. [=only she can hire new staff members] 2  He has sole jurisdiction of the area.
Dr. Stern responded: Dead space in lung. Dead space is a term used to describe an area of the lung where gas exchange cannot occur - it does not mean dead lung tissue. Everyone has dead space and it is comprised mainly of your airways. It is measured as a percentage. Dead space is affected by many variables including the size of the breath we inhale.
anatomical dead space. anatomical dead space in Medicine Expand. anatomical dead space n. The volume of the conducting airways of the nose, mouth, and trachea down to the level of the alveoli, representing that portion of inspired gas unavailable for exchange of gases with pulmonary capillary blood.