Go to 'thermo-' entry Go to 'dino-' entry Go to 'chondro-' entry Go to 'aero-' entry Go to '-logy' entry Go to 'thaumato-' entry Go to 'nano-' entry Go to '-sophy' entry Go to 'bucco-' entry Go to '-ism' entry Go to '-lysis' entry Go to 'galacto-' entry Go to '-anthropy' entry Go to 'pneumo-' entry Go to '-ploitation' entry Go to '-lithic' entry Go to '-sepalous' entry Go to 'onco-' entry Go to '-parous' entry Go to 'dermato-' entry Go to 'multi-' entry Go to 'dodeca-' entry Go to '-zoon' entry Go to 'vermi-' entry Go to 'crystallo-' entry Go to 'biblio-' entry Go to 'eco-' entry Go to 'juxta-' entry Go to 'facio-' entry
Affixes: the building blocks of English
Affixes: the building blocks of English

ox(y)-2 Also oxa- and oxo-

Oxygen.

[The first element of oxygen (see the previous entry).]

In oxyacetylene and oxyhydrogen the form denotes welding or cutting techniques using a very hot flame produced by mixing acetylene or hydrogen with oxygen; oxyhaemoglobin is a bright red substance formed by the combination of haemoglobin with oxygen, present in oxygenated blood; an oxyacid is an inorganic acid whose molecules contain oxygen, such as sulphuric or nitric acid; an oxide is a binary compound of oxygen with another element or group; oxidation originally referred to a chemical combination with oxygen, but is now usually understood as a reaction by which electrons are lost from an atom.

The forms oxo- and oxa- have specific meanings in the systematic rules for naming chemical compounds; the former refers to the presence of a carbonyl group, ==CO, anywhere in an organic molecule: oxodecanoic acid, 3-oxohexanal; the latter to an oxygen atom appearing in a heterocyclic molecule, assumed to replace a —CH2— group: 6-oxa-3-thiadecanenitrile.

See also deoxy-, ethoxy-, and methoxy-.

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