n. [ Gr. tachy`s quick + -graphy: cf. F. tachygraphie. ] The art or practice of rapid writing; shorthand writing; stenography. I. Taylor (The Alphabet). [ 1913 Webster ]
n. [ Gr. ta`chos speed + -graph. ] A recording or registering tachometer; also, its autographic record. [ Webster 1913 Suppl. ]