circumferentor

noun cir·cum·fer·en·tor \sə(r)ˈkəm(p)fəˌrentə(r)\

Definition of circumferentor

plural

-s

  1. 1 :  a surveyor's compass with diametral projecting arms each carrying a vertical slit sight

  2. 2 :  a graduated wheel formerly used to measure tires

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Origin and Etymology of circumferentor

Latin circumferentia circumference + English -or


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