noun tachy·graph \ˈtakə̇ˌgraf, -rȧf\

Definition of tachygraph

  1. 1 :  tachygrapher

  2. 2 :  a tachygraphic writing

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Origin and Etymology of tachygraph

French tachygraphe, from Greek tachygraphos, from tachy- + -graphos (from graphein to write) — more at carve

Seen and Heard

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a brief usually trivial fact

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