SO2 explained

SO₂ may refer to:

In science:

Sulfur dioxide (SO₂), an oxide of sulfur, a chemical compound
- to a Sulfonyl group (R-SO₂-R)
The special orthogonal group of degree 2
oxygen saturation (SO₂), in medicine of blood oxygenation
S2 (star), aka SO-2, is the name of a star near the central black hole at the center of the Milky Way galaxy that takes 16 years to orbit that black hole.
2015 SO₂, an Aten asteroid in a horseshoe orbit co-orbital with Earth

It may also refer to:

A staff officer of the second class, often a commissioned officer of lieutenant commander, major or squadron leader rank
A London Metropolitan Police Specialist Operations command division
Special Operations 2 – Operational, of SOE (Special Operations Executive, British, World War II)
Star Ocean 2, a video game
SO2 (album), a 2010 album by Shinichi Osawa
An abbreviation of "Shout-out to"

See also