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nouna rate (usually rapid) at which something happens
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nouna central nervous system stimulant that increases energy and decreases appetite; used to treat narcolepsy and some forms of depression
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verbcause to move faster
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verbmove hurridly
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nounchanging location rapidly
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verbmove very fast
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verbmove faster
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nounthe ratio of the focal length to the diameter of a (camera) lens system
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noundistance travelled per unit time
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verbtravel at an excessive or illegal velocity
Parts of speed
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