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

Derived 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

"It's also a possibility that the disease mechanism that impairs pulmonary gas exchange also leads to higher brain perfusion through downstream vascular injury in both lung and brain."

From Science Daily • Nov. 27, 2024

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

This allows both sides of the tissue to be in contact with the air at all times, greatly increasing the efficiency of gas exchange.

From Textbooks • Jan. 1, 2015