pantograph

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pan·to·graph / ˈpantəˌgraf/ • n. 1. an instrument for copying a drawing or plan on a different scale by a system of hinged and jointed rods. 2. a jointed framework conveying a current to a train, streetcar, or other electric vehicle from overhead wires. DERIVATIVES: pan·to·graph·ic / ˌpantəˈgrafik/ adj.

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pantograph instrument for the mechanical copying of a design. XVIII. — F. pantographe, f. Gr. PANTO- + -graphos -GRAPH.