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WordNet-Online 
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| Definitions from the WebQuadrennialDefinition: Occurring or taking place every four years. Part of Speech: Adjective Senses: 
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| quadrasonic quadrate quadratic quadratic equation quadratic equation in standard form quadratic polynomial quadratics quadrature quadrennial quadrennium quadreplegic quadric quadric surface quadriceps quadriceps femoris quadrigesima sunday quadrilate 
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