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nouna bevel gear that permits rotation of two shafts at different speeds; used on the rear axle of automobiles to allow wheels to rotate at different speeds on curves
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nounthe result of mathematical differentiation; the instantaneous change of one quantity relative to another; df(x)/dxtype of:
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nouna quality that differentiates between similar thingstype of:
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adjectiveinvolving or containing one or more derivatives
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