Meaning

• A person with deviant behaviour; a deviant, degenerate or pervert.

• A value equal to the difference between a measured variable factor and a fixed or algorithmic reference value.

Meaning

• To go off course from; to change course; to change plans.

• To fall outside of, or part from, some norm; to stray.

  "His exhibition of nude paintings deviated from the norm."

• To cause to diverge.