dead space

noun

Definition of dead space

:the portion of the respiratory system which is external to the bronchioles and through which air must pass to reach the bronchioles and alveoli

First Known Use of dead space

circa 1923


Medical Dictionary

dead space

noun

medical Definition of dead space

1 :space in the respiratory system in which air does not undergo significant gaseous exchange — see anatomical dead space, physiological dead space
2 :a space (as that in the chest following excision of a lung) left in the body as the result of a surgical procedure

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