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tachygraph

[tak-i-graf, -grahf]
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noun
  1. tachygraphic writing.
  2. a person who writes or is skilled in writing tachygraphy.

Origin of tachygraph

First recorded in 1800–10; tachy- + -graph
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018