What does deoxygenation mean?
Deoxygenation is the removal or reduction of oxygen from a substance, fluid, or biological system. The term is especially common in medicine, where blood deoxygenation describes blood returning from tissues with less oxygen, and in environmental science, where deoxygenation of water can create conditions harmful to fish and other aquatic organisms. It is also used in chemistry and industrial processes when oxygen must be removed or controlled. As a verb, deoxygenation means to deprive something of oxygen. The word is primarily formal and technical, although its underlying idea is straightforward: removing the element that supports many familiar forms of life. Deoxygenation is not the same as dehydration, which concerns the loss of water rather than oxygen.
The process or state of having oxygen removed from a substance, fluid, or system.
"Rapid deoxygenation of the blood can affect a patient's breathing."
Usually used in technical or formal contexts. It can refer to a general process or to a particular occurrence.
To remove oxygen from something.
"The system deoxygenates the water before distributing it to the greenhouse."
Less common than the noun; technical registers often prefer related forms such as deoxygenate or deoxygenated.
Used for separate occurrences or documented instances of the process.
"The study compared several deoxygenations of the circulating water."
Deoxygenation is the hidden opposite of oxygenation: it strips a substance of the very element that lets much of life breathe.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does deoxygenation come from?
Deoxygenation is formed from the Latinate prefix de-, meaning removal or reversal, combined with oxygenation, the process of supplying or combining with oxygen. Oxygen itself was coined in the late eighteenth century from Greek roots meaning “sharp” or “acid-forming” and “producing,” reflecting its role in forming acids. Related English words include oxygen, oxide, oxidation, and oxidise.
Related word forms
How deoxygenation is actually used
The word is formal and technical, especially in medicine, environmental science, chemistry, and water treatment. In medicine, it may describe reduced oxygen content in blood or tissues; in environmental contexts, it commonly refers to the depletion of dissolved oxygen in water.
Easily confused with deoxygenation
Deoxygenation removes oxygen, whereas dehydration removes water or moisture.