The Collaborative International Dictionary
Tachygraphic
Tachygraphic \Tach`y*graph"ic\, Tachygraphical \Tach`y*graph"ic*al\, a. [Cf. F. tachygraphique.] Of or pertaining to tachygraphy; written in shorthand.
Wiktionary
tachygraphic
a. Of or relating to tachygraphy; written in shorthand.