noun: (psychology) Initialism of schizoid personality disorder. [(psychiatry) A personality disorder characterized by social withdrawal, flat affect, very few, if any, close friends or personal relationships, excessive preoccupation with fantasy and insensitivity to prevailing social norms and conventions.]
noun: (psychology) Initialism of schizotypal personality disorder. [(psychiatry) A personality disorder characterized by an extreme discomfort in social situations and perceptual distortions.]
noun: (psychology) Initialism of sadistic personality disorder. [(historical, psychiatry) A disorder characterized by cruel, aggressive, demeaning, and manipulative behavior towards others.]
noun: (neuroscience) Initialism of sensory processing disorder.
noun: Initialism of spectral power distribution.
noun: (computing) Initialism of serial presence detect.
noun: Initialism of summary plan description.
noun: (electronics) Initialism of surge protective device (surge protector).
noun: (medicine) Initialism of symphysis pubis dysfunction.
noun: (German politics) Initialism of Social Democratic Party of Germany (“Sozialdemokratische Partei Deutschlands”).
noun: Abbreviation of speed. [The state of moving quickly or the capacity for rapid motion.]