Dioxygen: meaning, definitions and examples
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dioxygen
[ daɪˈɒksɪdʒən ]
chemical compound
Dioxygen is a molecule composed of two oxygen atoms, commonly represented as O2. It is a diatomic molecule essential for the respiration of most living organisms on Earth and plays a crucial role in various chemical processes, including combustion and oxidation.
Synonyms
Examples of usage
- Plants convert dioxygen back into carbon dioxide during nighttime.
- Dioxygen supports aerobic respiration in animals.
- The combustion of hydrocarbons produces dioxygen as a byproduct.
Etymology
The term 'dioxygen' is derived from the Greek words 'dyo', meaning 'two', and 'xygen', which means 'acid former'. The name highlights the molecule's structure, consisting of two oxygen atoms. The discovery of dioxygen dates back to the late 18th century when chemists such as Antoine Lavoisier identified it as an essential component of air and a key element in combustion. Dioxygen was later recognized as vital for sustaining life, leading to its characterization in biological and chemical contexts. The modern name 'dioxygen' reflects its composition and distinguishes it from other forms of oxygen, such as ozone (O3). Throughout the 19th and 20th centuries, the understanding of dioxygen expanded with advancements in chemistry and biology, particularly in how it interacts with various substances and its indispensable role in ecosystems.