Function: noun
Date: circa 1923
: the portion of the respiratory system which is external to the bronchioles and through which air must pass to reach the bronchioles and alveoli
Function: noun
Date: circa 1923
: the portion of the respiratory system which is external to the bronchioles and through which air must pass to reach the bronchioles and alveoli
Merriam Webster Collegiate English Dictionary. Merriam Webster - Энциклопедический словарь английского языка. 2012