SO4

SO4 may refer to:

• National Identification Service, a department of the London Metropolitan Police which provides a range of support services on behalf of the Metropolitan Police and other police forces
• Star Ocean: The Last Hope, an action role-playing video game developed by Tri-Ace and Square Enix
• Sulfate, SO²⁻
  ₄, in chemistry, an inorganic ion or a salt of sulfuric acid.
• SO4 is an acronym for remembering the function of the fourth cranial nerve, the trochlear nerve, which control the superior oblique muscle of the eye.
• SO(4), the group of rotations in 4-dimensional Euclidean space

Topics referred to by the same term

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