/ Dictionary / Index T tachogram: Meaning and Definition of Find definitions for: tach•o•gram Pronunciation: (tak'u-gram"), [key] — n. the record produced by the action of a tachometer. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: tachogram (Thesaurus) tacho- tachograph Related Content Daily Word Quiz: diligent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language