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n. Symbol O
A nonmetallic element constituting 21 percent of the atmosphere by volume that occurs as a diatomic gas, O2, and in many compounds such as water and silica, and in iron ore. It combines with most elements, is essential for plant and animal respiration, and is required for nearly all combustion. Ozone, O3, is an allotrope of this element. Atomic number 8; atomic weight 15.9994; melting point -218.79°C; boiling point -182.9°C; gas density at 0°C 1.429 grams per liter; valence 2. See Periodic Table.

[French oxygène : Greek oxus, sharp, acid; see ak- in Indo-European roots + French -gène, -gen.]

ox′y·gen′ic (-jĕn′ĭk) adj.
ox′y·gen′i·cal·ly adv.
ox·yg′e·nous (ŏk-sĭj′ə-nəs) adj.
Word History: One of the most important substances on earth is misnamed. The word oxygen is the Anglicized form of French oxygène, the name for the element proposed in a work entitled Méthode de nomenclature chimique (1787) by a collaborative of chemists including Antoine Laurent Lavoisier, Louis Bernard de Guyton de Morveau, Claude Louis Berthollet, and Antoine François de Fourcroy. (Oxygen had been discovered a few years before by Joseph Priestley in 1774, and he had called the gas dephlogisticated air.) The same publication also introduced the French words that were soon adopted into English as hydrogen and sodium chloride (common salt), among other terms commonly used in chemistry. The French word oxygène was intended to mean "acid-producing," from the Greek word oxus, "sharp," used in the sense "acid," and the Greek suffix -genes, "born," misinterpreted as "producing." At the time oxygen was thought to be an essential component of an acid. Although this is not the case, the name oxygen has persisted for the element.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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Among the various carbon-based materials, graphene and its chemical derivatives, aroused as potential substrates for assembling nanocomposite for energy-based applications, due to its superior electrochemical reactivity, high conductivity and exceptional electrode stability [21].Within this class, graphene oxide (GO) has revealed excessive coordinating potential with other materials to form GO based electrode material, due to the presence of oxygenic functional groups on the basal aromatic lattice [22, 23].
Plants, algae, and some bacteria today perform 'oxygenic' photosynthesis, which splits water into oxygen and hydrogen to power the process, releasing oxygen as a waste product.
Both structures contain a site that cyanobacteria and plants exclusively use to split water -- the first crucial step in oxygenic photosynthesis.
To date, the most metabolically versatile microorganisms are the purple non-sulfur bacteria, a group of an oxygenic photosynthetic microorganisms that, in the absence of light, can employ both aerobic and anaerobic respiration, and fermentation.
Getting a precise identification of cyanobacteria in different environments would be critical to know the diversity of these microorganisms, track the appearance of their characteristics and adaptations, and determine the conditions that drove the evolution of oxygenic photosynthesis, one of the most relevant events studied by geobiologists.
(2008) have determined [beta]-eudesmol (42%) and [alpha]-eudesmol (16%) which are of oxygenic sesquiterpenes as the most important compounds of P.
Fourteen papers delivered at the March 2016 workshop present recent advances in understanding respiratory and photosynthetic electron transport chains, dynamic regulation of light harvesting, and electron transport events in oxygenic photosynthesis.
The direct investigation of Nod will be more valuable than just the investigation of NC10, especially in understanding the environmental significance of this oxygenic pathway.
The oxygenic difference also makes the characteristic change of MSCs from the bone marrow and others.
The surface oxygenic functional groups were determined according to the Boehm titration method [19].