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| Abbreviation | Full Form | Category |
|---|---|---|
| O&S | Operations and Support |
Others
|
| O.S. | left eye (ocularis/oculus sinister (Lat.) |
Others
|
| O/S | Operations and Support life cycle phase |
Others
|
| O/S | Opposite Side |
Others
|
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Nitrogen (Symbol: N, Atomic number: 7) is a non-metal element discovered in 1772. It belongs to period 2 and group 15 of the periodic table. It is the most abundant\u2026
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