SO3 may refer to
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Sulfur trioxide
Sulfur trioxide (alternative spelling sulphur trioxide, also known as ''nisso sulfan'') is the chemical compound with the formula SO3. It has been described as "unquestionably the most important economically" sulfur oxide. It is prepared on an ind ...
, a chemical compound of sulfur and the anhydride of sulfuric acid
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Sulfite
Sulfites or sulphites are compounds that contain the sulfite ion (or the sulfate(IV) ion, from its correct systematic name), . The sulfite ion is the conjugate base of bisulfite. Although its acid ( sulfurous acid) is elusive, its salts are wide ...
, a chemical ion composed of sulfur and oxygen with a 2− charge
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SO(3)
In mechanics and geometry, the 3D rotation group, often denoted SO(3), is the group of all rotations about the origin of three-dimensional Euclidean space \R^3 under the operation of composition.
By definition, a rotation about the origin is a tr ...
, the special orthogonal group in 3 dimensions; the rotations that can be given an object in 3-space
*''
Star Ocean: Till the End of Time'', the third main game in the ''Star Ocean'' series
*A
staff officer
A military staff or general staff (also referred to as army staff, navy staff, or air staff within the individual services) is a group of officers, enlisted and civilian staff who serve the commander of a division or other large military un ...
of the third class, usually a
junior officer
Junior officer, company officer or company grade officer refers to the lowest operational Officer (armed forces), commissioned officer category of ranks in a military or paramilitary organization, ranking above non-commissioned officers and below ...
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Special Operations 3 - Planning
Special or specials may refer to:
Policing
* Specials, Ulster Special Constabulary, the Northern Ireland police force
* Specials, Special Constable, an auxiliary, volunteer, or temporary; police worker or police officer
Literature
* ''Specia ...
, of
SOE (Special Operations Executive, British, World War II)
*''SO3'', a
TL9000 metric defined as the number of service impact product-attributable outages per NU (normalization unit) per year
{{Letter-Number Combination Disambiguation