gas exchange

American  

[gas-iks-chaynj] / ˈgæs ɪksˌtʃeɪndʒ /

noun

1. Biology. the exchange of oxygen and carbon dioxide in an organism or its cells as one gas is absorbed from the environment and the other released, as during respiration or transpiration.

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gas exchange Scientific  

1. The diffusion of gases from an area of higher concentration to an area of lower concentration, especially the exchange of oxygen and carbon dioxide between an organism and its environment. In plants, gas exchange takes place during photosynthesis. In animals, gases are exchanged during respiration.

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Other Word Forms

• gas-exchange
  adjective

Example Sentences

Chilling a washed egg reduces that risk, because low temperatures slow down gas exchange between air and egg.

From Slate • Apr. 19, 2025

AT1 cells are long and thin, with a large surface to facilitate gas exchange between the lungs and the bloodstream.

From Science Daily • Nov. 17, 2023

EEX is Europe's leading electricity and natural gas exchange, serving 800 participants.

From Reuters • Aug. 21, 2023

But evolution can thicken and strengthen eggshell only so much because the shell must allow for gas exchange and the eventual exit of the hatchling.

From Scientific American • Aug. 15, 2023

In a cross-current or counter-current system, the air flows in one direction and the blood flows in the opposite direction, creating a very efficient means of gas exchange.

From Textbooks • Jan. 1, 2015