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uniaxial
unicameral
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unicellular
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unicostate
unicycle
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unicycle

u·ni·cy·cle [ yni sk'l ] (plural u·ni·cy·cles)


noun 
Definition:
 
single-wheeled vehicle: a pedal-powered vehicle that has a single wheel with a seat mounted on a frame above it

[Mid-19th century. After bicycle]

u·ni·cy·clist noun
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