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Definition of Lower airway
1. Noun. (anatomy) The part of respiratory tract starting at trachea and ending at bronchioles. ¹
2. Noun. (anatomy) The part of respiratory tract starting at trachea and ending at alveoli. ¹
3. Noun. (anatomy) The part of respiratory tract starting at larynx and ending at alveoli. ¹
¹ Source: wiktionary.com
Medical Definition of Lower airway
1. The portion of the respiratory tract that extends from the subglottis to and including the terminal bronchioles. (05 Mar 2000)