Akademik

Speed
: Common street name for a stimulant drug, especially for an amphetamine. Amphetamines have been used to treat hyperactivity in children, the symptoms of narcolepsy, and as an appetite suppressant and they are also frequently abused as a stimulant of the central nervous system.
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The magnitude of velocity without regard to direction. Cf.:velocity.
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Strategies for Patency Enhancement in the Emergency Department [study]

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speed 'spēd n METHAMPHETAMINE also a related stimulant drug and esp. an amphetamine

Medical dictionary. 2011.