- Oxygen is a colorless and odorless gas that people need to breath.
An example of oxygen is the colorless and odorless gas that you breath in every day.
Origin of oxygenFrench oxygène, altered (1786) ; from earlier oxygine, literally , acid-producing: so named (1777) by Antoine Laurent Lavoisier ; from Classical Greek oxys (see oxy-) + Classical Latin gignere, to beget (see genus): from the belief that oxygen is present in all acids
Origin of oxygenFrench oxygène : Greek oxus, sharp, acid; see ak- in Indo-European roots + French -gène, -gen.
(countable and uncountable, plural oxygens)
- A chemical element (symbol O) with an atomic number of 8 and relative atomic mass of 15.9994.
- Molecular oxygen (O2), a colorless, odorless gas at room temperature.
- (medicine) A mixture of oxygen and other gases, administered to a patient to help him or her to breathe.
- (countable) An atom of this element.
Borrowed from French oxygène (originally in the form principe oxygène, a variant of principe oxigine ‘acidifying principle’, suggested by Lavoisier), from Ancient Greek ὀξύς (oxus, “sharp”) + γένος (genos, “birth”), referring to oxygen's role in the formation of acids.