An example of oxygen is the colorless and odorless gas that you breath in every day.
Origin of oxygen
- French oxygène Greek oxus sharp, acid ak- in Indo-European roots French -gène -gen
From American Heritage Dictionary of the English Language, 5th Edition
- 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.