Definition of air cell:
(n) :
(medicine) A terminal dilation of the bronchiole in lungs or similar organs where gas exchange occurs.
(n) :
(electrical engineering) An electrochemical cell that uses air as a terminal, such as the metal-air electrochemical cell.
(n) :
(mechanical engineering) A prechamber in an indirect injection internal combustion engine.
(n) :
(medicine) Spaces that contain air in the bones of the skull.
(n) :
Used other than figuratively or idiomatically: see air cell.