Oxygen is a colorless and odorless gas that people need to breath.(noun)
An example of oxygen is the colorless and odorless gas that you breath in every day.
See oxygen in Webster's New World College Dictionary
Origin: Fr oxygène, altered (1786) < earlier oxygine, lit., acid-producing: so named (1777) by Antoine Laurent Lavoisier < Gr oxys (see oxy-) + L gignere, to beget (see genus): from the belief that oxygen is present in all acids
See oxygen in American Heritage Dictionary 4
noun Symbol O
Origin: French oxygène
Origin: : Greek oxus, sharp, acid; see ak- in Indo-European roots
Origin: + French -gène, -gen.
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