/ Dictionary / Index T tachygraph: Meaning and Definition of Find definitions for: tach•y•graph Pronunciation: (tak'i-graf", -gräf"), [key] — n. tachygraphic writing. a person who writes or is skilled in writing tachygraphy. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. tachycardia tachygraphy Related Content Daily Word Quiz: immense Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language